38 (2): (2014) 251-268 Original Scientiic Paper Plant species and subspecies discovered by Dr. Josif Pančić 1 – distribution and loristic importance Vladimir Stevanović✳1, Vladimir Vladimirov2, Marjan Niketić3, Snežana Vukojičić1, Ksenija Jakovljević1, Biljana Lubarda4 and Gordana Tomović1 1 Institute of Botany and Botanical Garden, Faculty of Biology, University of Belgrade, Takovska 43, 11000 Belgrade, Serbia 2 Department of Plant and Fungal Diversity and Resources, Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Acad. Georgi Bonchev St., bl. 23, 1113 Soia, Bulgaria 3 Natural History Museum, Njegoševa 51, 11000 Belgrade, Serbia 4Faculty of Natural Sciences and Mathematics, University of Banja Luka, Mladena Stojanovića 2, 78 000 Banja Luka, Republic of Srpska ABSTRACT: In this paper, we present 17 taxa that Josif Pančić discovered and published during investigations of lora of Serbia, Montenegro and Bulgaria in the period 1846-1888. For each species distribution maps are given based on our own ield research, rich herbarium collections (BEOU, BEO, SOM) and literature sources. Classiication of plant taxa into loristic elements and basic information about the habitat and ecology of each taxon are also presented. he following 17 species and subspecies are presented: Picea omorika (Pančić) Purk., Parietaria serbica Pančić, Cerastium rectum Friv. subsp. petricola (Pančić) H. Gartner, Heliosperma macranthum Pančić, Heliosperma pusillum (Waldst. & Kit.) Rchb. subsp. monachorum (Vis. & Pančić) Niketić & Stevan., Heliosperma pusillum (Waldst. & Kit.) Rchb. subsp. moehringiifolium (Uechtr. ex Pančić) Niketić & Stevan., Dianthus moesiacus Vis. & Pančić, Consolida uechtritziana (Pančić ex Huth) Soó, Erysimum commatum Pančić, Malcolmia orsiniana (Ten.) Ten. subsp. serbica (Pančić) Greuter & Burdet, Barbarea balcana Pančić, Cardamine serbica Pančić, Sempervivum leucanthum Pančić, Viola orbelica Pančić, Althaea kragujevacensis Pančić ex Diklić & Stevan., Euphorbia subhastata Vis. & Pančić and Haplophyllum boisserianum Vis. & Pančić. he remainder of Pančić’s 48 plants will be presented in following issues of “Botanica Serbica”. Key words: Josif Pančić, endemic lora, distribution of vascular plants, Balkan Peninsula. Received: 10 June 2014 Revision accepted 01 October 2014 UDK 581.92:582.95 INTRODUCTION During explorations of the lora of Serbia, Montenegro and Bulgaria between 1846 and 1888, Josif Pančić discovered and published, alone or with Roberto de Visiani and Sava Petrović, about 217 taxa and 47 species (Mayer & Diklić 1967). However, on the basis of the most recent Nomenclature review of the plants published by Josif Pančić (Niketić 2014), it can be concluded that correspondence: vstev@bio.bg.ac.rs ✳ Josif Pančić published 226 plant names, of which he claimed 167 as new taxa for science, including 118 new plant species. he analysis of validity revealed that 87 of Pančić’s taxa, or more than half (52.10%) are currently accepted, including 54 in speciic and 11 in subspeciic rank (Niketić 2014). he rest of the taxa (at the rank of species or subspecies) published by Pančić and coauthors are placed as synonyms or are determined as taxa at lower rank (variety or form). Some of the unaccepted Pančić taxa © 2014 Institute of Botany and Botanical Garden Jevremovac, Belgrade 252 vol. 38 (2) are the subject of current investigations and consideration of their taxonomical evaluation. It is understandable that, at the time of their discovery and description, Pančić’s species were known mostly just from the locus classicus or only from several localities. Subsequent chorological and other investigations of these plants showed that their ranges, in most cases, are much wider. However, most of Pančić’s plants are endemic to the Balkan Peninsula, though some species have a wider distribution, such as Bupleurum pachnospermum Pančić, Centaurea stoebe L. subsp. australis (Pančić ex A. Kerner) Greuter, Erysimum commatum Pančić, Geum molle Vis. & Pančić, Hieracium naegelianum Pančić, Jurinea mollis (L.) Rchb. subsp. subhastata (Pančić) Diklić & Nikolić, Koeleria eriostachya Pančić, Lactuca aurea (Vis. & Pančić) Stebbins, Parietaria serbica Pančić, Securigera elegans (Pančič) Lassen and Tragopogon pterodes Pančić ex Petrović. he aim of this paper is to provide an overview, ater more than 150 years, of the distribution of Pančić’s species and subspecies, using data from herbarium collections, personal ield investigations and numerous literature sources. Emphasis is given to loristic and phytogeographical importance, as well as phylogenetical position and relation to the closest relatives of Pančić’s plants, to provide a worthy tribute to the great contribution Pančić made to our knowledge of lora of the Balkan Peninsula. his paper includes 17 species and subspecies (Pinaceae to Rutaceae), while another 48 species and subspecies will be presented in forthcoming issues of “Botanica Serbica”. MATERIAL AND METHODS Checking and revision of herbarium material, personal ield investigations and relevant literature sources were used to prepare distribution records. Distribution of the species and subspecies was presented on 10×10 sq. km using the UTM grid system (UTM Zones 33-35T). In addition, doubtful data were identiied with a question mark (?) and incorrect data with a minus sign (–). Imprecise localities were presented by larger circles. For typiied species, the locus classicus was indicated by an arrow. Plant material is deposited in the Herbarium of the Institute of Botany and Botanical Garden “Jevremovac”, University of Belgrade (BEOU), the Herbarium of the Natural History Museum in Belgrade (BEO), the Herbarium of the Faculty of Biology, Soia University, Soia, Bulgaria (SO) and the Herbarium of Vascular Plants and Mosses Collections, Institute of Botany, Bulgarian Academy of Sciences (SOM) (Thiers 2014). Nomenclature used was according to the databases Euro+Med (2006-), The Plant List (2013), IOPI (http://plantnet.rbgsyd.nsw. gov.au/iopi/iopihome.htm), etc. Classiication of plant taxa into loristic elements, chorological subgroups and groups corresponds to the phytogeographic division presented in Stevanović (1992, 2012), adapted and modiied by Stevanović for the Balkan endemic lora in Serbia (Tomović et al. 2014) and in Bosnia and Herzegovina (Lubarda et al. 2014). RESULTS Picea omorika (Pančić) Purk. in Österr. Monatschr. Forstwes. 27: 446 (1877) – Pinaceae ≡ Pinus omorika Pančić, Neu. Conif. Alp.: 4 (1876); Gard. Chron. 1: 620 (1877) [basion.] A very distinctive coniferous species of the European dendrolora that was described by Pančić (1876: 4) under the name Pinus omorika from two localities in Serbia: Mt Tara (near Zaovine and in Crvena Stena near Rastište) and two localities in Bosnia and Herzegovina: Mt Janjac above Štula and Mt Semeće above Višegrad city. As Pančić did not mark the type specimen, as well as locus classicus, lectotypiication of this species was done by Farjon (2010: 590) and for the type locality this author selected Crvena Stena “Type: W Serbia, Rastiste, Crvena Stena, J. Pančić s.n. (lectotype, K)”. Distribution of this local endemic conifer is restricted to W. Serbia and E. Bosnia and Herzegovina along the middle stretch of the Drina river (Fig. 1), within four disjuncted parts of the range: 1) Main part with numerous small sites is situated in National Park “Tara” in Serbia and adjacent sites in Bosnia and Herzegovina between Višegrad and Srebrenica (Mt Stolac, Mt Devetak); 2) Mt Viogor (Municipality of Čajniče) in Bosnia and Herzegovina; 3) Radomišlje, part of the Mt Zelengora (Municipality of Foča) in Bosnia and Hercegovina; 4) Canyon of the Mileševka river, locality Ravnište (Municipality of Prijepolje) in S.W. Serbia (Fukarek 1951; Čolić 1953; Mataruga et al. 2011). Fig. 1. Distribution of the species Picea omorika (Pančić) Purk. in the Balkan Peninsula V. Stevanović et al: Plant species and subspecies discovered by Dr. Josif Pančić 1 – distribution and loristic importance 253 inhabits steep north to northwest facing limestone slopes, with an altitudinal range from 800-1500 m. Depending on the altitude and slope, the associated tree species are Picea abies (L.) H. Karst., Abies alba Mill. and Fagus sylvatica L. It can also occur with Pinus nigra J. F. Arnold, P. sylvestris L., Acer platanoides L. and Carpinus betulus L. and sometimes it forms almost pure stands. he habitat at the locality Crveni Potok is peatland where the population of Serbian spruce is near to being extinct. In addition, it very rarely inhabits serpentine rocky slopes at locality Zmajevački Potok in the vicinity of Zaovine in Mt Tara (Fukarek 1951; Čolić 1953). Due to its restricted distribution range, as well as a decreasing population trend, P. omorika is included in he IUCN Red List of hreatened Species. Version 2014.2. under the EN category (Mataruga et al. 2011). Fig. 2. Distribution of the species Parietaria serbica Pančić in the Balkan Peninsula and Romania Despite the fact that Serbian spruce was described more than a century ago, there has been a long-standing dilemma about its phylogenetic position in the genus Picea. More than 10 infrageneric classiications of the genus Picea were done in the 20th century and they all determined Serbian spruce as a founder of the section Omorika where diferent species of the genus Picea were classiied. However, in the 70-ies of the last century there was an accepted opinion (Krüssmann 1972), that the section Spruce still includes three species: P. breweriana S. Watson from North America, P. spinulosa (Grif.) A. Henry and P. brachytyla (Franch.) E. Pritz. from China. Moreover, Liu (1982) proposed division of the genus Picea into two subgenera: Omorika (Willk.) Liu with two sections Omorika Willd. emend. Liu and Morinda Mayr emend. Liu and Picea with two sections Picea and Casicta Mayr emend. Liu. In the last decade, phylogenetic studies of the genus Picea based on plastid and mitochondrial DNA (Bouillé & Bousquet 2005; Ran et al. 2006) suggested the origin of Picea to be in North America and placed P. omorika into the clade with two broadly distributed boreal North-American species P. mariana (Mill.) Britton, Sterns & Poggenb. and P. rubens Sarg. On the contrary, Lockwood et al. (2013) found three clades and positioned P. omorika into the Eurasian clade together with two Japan-Sakhalin species P. maximowiczii Regel ex Mast. and P. alcoquiana (H. J. Veitch ex Lindl.) Carrière and Caucasian-Asia Minor spruce P. orientalis (L.) Peterm. hese two opposite viewpoints about the origin and phylogenetic position of P. omorika, demonstrate that this species remains an unsolved puzzle for botanists. Serbian spruce belongs to the East Dinaric loristic element, in a broader sense to the Boreal Balkan-Boreal subgroup of plants. his paleoendemic tree predominantly Parietaria serbica Pančić, Flora Serbiae: 620 (1874), in clavi – Urticaceae ≡ P. lusitanica L. subsp. serbica (Pančić) P. W. Ball., Feddes Repert. Spec. Nov. Regni Veg. 68: 186 (1963). – P. chersonensis sensu Grecescu, Consp. Fl. Romaniei: 518 (1898) [non (Láng & Szov.) Dörl., Herb. Norm.: No. 3581 (1898)]. – P. lusitanica var. chersonensis sensu Stoj. & Stef., Fl. Bulg.: 328 (1925) [non Láng & Szov Flora 10(1/3): 67 (1827)]. his taxon Pančić (1874: 620) described from two localities: above the villages Niševci and Đurinci near Knjaževac and above the monastery Ravanica in the vicinity of Ćuprija. Its closest relative is the widespread Mediterranean species P. lusitanica L. and some botanists consider P. serbica as a subspecies of this species (Ball 1993). It is widely distributed in the eastern part of the Balkan Peninsula (Fig. 2): W., C., N. and N.E. Bulgaria (Georgiev 1966), N.E. and E. Serbia with an isolated locality in W. Serbia (Tomović et al. 2012), as well as in Romania in the S. and E. Carpathians and Dobrogea (Negrean & Dihoru 2009). It belongs to the West-East Moesian-South CarpathianDobrogean loristic element, in the wider sense to the subgroup of Submediterranean-(Pontic) plants. Unlike most European representatives of the genus Parietaria that inhabit exposed rocks and walls, P. serbica is mainly an ombrofuge chasmophyte that primarily grows on limestone rocks inclinated more than 900, usually in rock shelters and around the entrance of caves (Tatić & Petković 2012). In Romania this species inhabits shady rock crevices (Negrean & Dihoru 2009). Cerastium rectum Friv. subsp. petricola (Pančić) H. Gartner, Repert. Spec. Nov. Regni Veg. Beih. 113: 38 (1939) – Caryophyllaceae ≡ Cerastium petricola Pančić, Glasn. Srpskog Učenog Društva 53: 180 (1883) [Elem. Fl. Bulg.: 20] [basion.] Locus classicus: Mt Rila, between Monastery Rila and Samokovo (Pančić 1883: 180). 254 vol. 38 (2) Fig. 3. Distribution of the subspecies Cerastium rectum Friv. subsp. petricola (Pančić) H. Gartner in the Balkan Peninsula Fig. 4. Distribution of the species Heliosperma macranthum Pančić in the Balkan Peninsula Species C. rectum Friv. belongs to subsect. Vulgata Hayek that includes mainly biennial, rarely annual and short-lived herbaceous representatives (Niketić 2012). Within this subsection, C. rectum is closely related to the widespread Eurasian species C. sylvaticum Waldst & Kit. and the Caucasian species C. ruderale M. Bieb. (Strid 1997). C. rectum is divided into two subspecies: subsp. petricola (Pančić) Gartner is distributed in S.W. Bulgaria (Mt Osogovske Planine and Mt Rila; the literature record from Mt Pirin (Velenovský 1891) is doubtful), E. and S. Macedonia and N. and N.E. Greece (Fig. 3), while the range of subsp. rectum includes C. Bosnia and Herzegovina, Montenegro, Albania, W., C. and E. Serbia, W., S.W. and C. Bulgaria, S. Macedonia and N. and N.E. Greece. In S.W. Bulgaria, S. Macedonia and N.E. Greece the ranges of these two subspecies overlap. However, habitats of subsp. petricola are situated at higher altitudes above 1000 m in comparison with the subsp. rectum which mainly grows at lower altitudes. his taxon belongs to the Southwest MoesianMacedonian-hessalian loristic element, and in the wider sense to Submediterranean-continental subgroup of plants. It inhabits moderately wet or dry siliceous rocky slopes, forest clearings, beside mountain roads, from mountain to subalpine belts (Niketić 2012). his species belongs to the subendemic Balkan genus Heliosperma Rchb. whose centre of largest taxa richness is the Dinaric Alps, especially in the S.E. part of the mountain chain. he genus Heliosperma was segregated as a distinct genus by Reichenbach (1841), but soon it was included in the genus Silene L. and until recently had kept this taxonomic status. Recent studies of molecular phylogeny of the genus Heliosperma conirmed the validity of this genus and supported its separation from the genus Silene (Frajman & Oxelman 2007). Heliosperma is an ancient genus which probably diferentiated into a number of closely-related taxa during glacial-interglacial periods in the Balkans (Niketić & Stevanović 2007). H. macranthum is a species very well distinguished from all other taxa of the genus Heliosperma by its very large pink lowers. his feature was stressed by Pančić (1875: 12) who gave the name H. macranthum. It is closely related to the recently described species H. oliverae Niketić & Stevan. from Mt Prokletije, H. retzdoriana K. Malý from the Gorge of the Neretva river in Bosnia and Herzegovina and to H. nikolicii (Seliger & Wraber) Niketić & Stevan. distributed in N. Albania and Metohija province (Niketić & Stevanović 2007). he distribution range of H. macranthum includes S.E. Dinaric Alps from Mt Komovi (locus classicus) over Mt Visitor to Mt Prokletije in Montenegro, Serbia and Albania (Fig. 4). For the locality in Tutin area from the literature source (Petković et al. 1989), there is no herbarium specimen which could prove this record. It is a local endemic of Prokletije mountain loristic district (S.E. Dinaric orophytic elements), while in a broader sense it belongs to the South-European Heliosperma macranthum Pančić, Elench. Crna Gora: 11 (1875) – Caryophyllaceae ≡ Silene macrantha H. Neumayer ex Hayek, Denkschr. Akad. Wiss. Wien 94: 143 (1918) Locus classicus: Mt Komovi, locality Visoke Grede (Pančić 1875: 11). V. Stevanović et al: Plant species and subspecies discovered by Dr. Josif Pančić 1 – distribution and loristic importance 255 mountainous subgroup. It inhabits limestone rocky crevices in a wide range of altitudes from 1000 m in the gorges and canyons to over 2000 m in the surrounding mountains. It is a member of the chasmophytic communities of vegetation order Amphoricarpetalia (Niketić & Stevanović 2012). Heliosperma pusillum (Waldst. & Kit.) Rchb. subsp. monachorum (Vis. & Pančić) Niketić & Stevan. Arh. Biol. Nauka 59(4): 393 (2007) – Caryophyllaceae ≡ H. monachorum Vis. & Pančić, Mem. Reale Ist. Veneto Sci. 12: 463, tab. 8 (1865) [basion.] ≡ Silene monachorum Vis. in Vis. & Pančić, Mem. Reale Ist. Veneto Sci. 12: 463 (1865), nom. inval., pro syn. ≡ S. monachorum Vis. & Pančić in Pančić, Flora Kn. Srbije: 168 (1874), in clavi ≡ S. quadridentata (L.) Pers. subsp. monachorum H. Neumayer in Hayek, Repert. Spec. Nov. Regni Veg. Beih. 30(1): 265 (1924) [Prodr. Fl. Penins. Balc. 1] ≡ S. pusilla subsp. monachorum (Vis. & Pančić) Slavnić in Josifović, Flora SR Srbije 2: 236 (1970). = Silene pusilla subsp. tymphyaea Greuter, Willdenowia 25(1): 132 (1995). = Silene quadridentata (L.) Pers. f. biloba Novák, Preslia 5: 95 (1927). Locus classicus: Derventa river Gorge (Visiani & Pančić 1865: 463). It belongs to the complex H. pusillum which is distributed from the Alps and the Carpathians to the mountains of the Balkan Peninsula. he largest number of taxa of this complex is located in the Dinaric Alps and Scardo-Pindic mountain chain. H. pusillum subsp. monachorum is a relatively widespread endemic plant of the western part of the peninsula (Fig. 5) with the center of distribution in the C. and E. Dinaric Alps in Bosnia and Herzegovina, Montenegro, W. Serbia, extending southerly to Albania, W. Macedonia and N.W. Greece (Niketić & Stevanović 2012). It was also mentioned for the central Apennines, but according to a recent literature source (Conti et al. 2005), this record seems to be erroneous. It belongs to the Central-East Dinaric-North ScardoPindic loristic element, in the wider sense to the subgroup of South-European mountainous species. his is a typical chasmophyte inhabiting shady limestone rocks, usually in the gorges and canyons, within various forest communities from mountain to subalpine belt. Less commonly it inhabits serpentine rocks (Niketić & Stevanović 2012). Heliosperma pusillum (Waldst. & Kit.) Rchb. subsp. moehringiifolium (Uechtr. ex Pančić ) Niketić & Stevan. Arh. Biol. Nauka 59(4): 392 (2007) – Caryophyllaceae ≡ Silene moehringiifolia Uechtr. ex Pančić, Add. Fl. Princ. Serb.: 118 (1884) [basion.] Fig. 5. Distribution of the subspecies Heliosperma pusillum (Waldst. & Kit.) Rchb. subsp. monachorum (Vis. & Pančić) Niketić & Stevan. in the Balkan Peninsula ≡ Silene quadridentata (L.) Pers. subsp. moehringiifolia (Uechtr. ex Pančić) H. Neumayer in Hayek, Repert. Spec. Nov. Regni Veg. Beih. 30(1): 266 (1924) [Prodr. Fl. Penins. Balc. 1]; ≡ S. pusilla subsp. moehringiifolia (Uechtr. ex Pančić) Slavnić in Josifović, Flora SR Srbije 2: 236 (1970), comb. inval. Locus classicus: Mt Stol in Krajinska region (Pančić 1884: 118). his is also a taxon from the complex H. pusillum which is distributed in N.E and E. Serbia and C. Bulgaria (Mt Central Stara Planina) (Fig. 6). In the central part of the Balkan Peninsula it can be regarded as vicarious with the taxon H. pusillum subsp. monachorum whose distribution range covers the western part of the peninsula (Tomović et al. 2012). It belongs to the West-Central Moesian loristic element and in the wider sense to the South-European mountainous subgroup of species. It is a predominantly calcicole chasmophyte inhabiting similar shady habitats as H. pusillum subsp. monachorum, but rarely can be found on siliceous rocks (Niketić & Stevanović 2012). Dianthus moesiacus Vis. & Pančić, Mem. Reale Ist. Veneto Sci. 15: 17, tab. 19 (1870) – Caryophyllaceae ≡ D. carthusianorum L. var. moesiacus Williams, Journ. Linn. Soc. 29: 376 (1893). = D. burgasensis Tutin, Feddes Repert. Spec. Nov. Regni Veg. 68: 192 (1963) Locus classicus: Mt Vrška Čuka (Visiani & Pančić 1870: 17). 256 vol. 38 (2) Fig. 6. Distribution of the subspecies Heliosperma pusillum (Waldst. & Kit.) Rchb. subsp. moehringiifolium (Uechtr. ex Pančić ) Niketić & Stevan. in the Balkan Peninsula Fig. 7. Distribution of the species Dianthus moesiacus Vis. & Pančić in the Balkan Peninsula D. moesiacus is an interesting endemic species from the section Carthusianum Williams which is represented by numerous endemic taxa in the Balkans. Several infraspeciic taxa at subspecies rank with few forms were described in Bulgaria: D. moesiacus subsp. genuinus Stoj. & Acht. (with forms typicus, pallidus, macedonicus and macrocephalus), D. moesiacus subsp. grancarovii (Urum.) Stoj. & Acht., D. moesiacus subsp. sevlivensis (Degen & Neicef) Stoj. & Acht., D. moesiacus subsp. skobelevii (Velen.) Stoj. & Acht. and D. moesiacus subsp. stribrnyi (Velen.) Stoj. & Acht. (Stojanoff & Achtaroff 1935). However, the taxonomical status of these subspecies is unclear. Some authors (Jalas & Suominen 1986: 219) included these taxa into D. moesiacus as synonyms, while others (Marhold 2011a) accepted these taxa in the rank of subspecies. In any case, the complex D. moesiacus requires a substantial taxonomical revision. In the description of a new species, Visiani & Pančić (1870) pointed out that D. moesiacus is most similar to D. pinifolius Sm. and speciied diferential characters for these two species. Later studies indicated that within the section Carthusianum, the species D. moesiacus is positioned among three groups or aggregates: D. pontedere, D. pinifolius and D. cruentus (Stojanoff & Achtaroff 1935). However, according to Diklić & Stevanović (2012), D. moesiacus is most similar to the Moesian species D. stribrnyi Velen. (D. moesiacus subsp. stribrny (Velen.) Stoj. & Acht.) and Moesian-Macedonian species D. stenopetalus Griseb., forming a particular group of similar taxa in the section Carthusianum. D. moesiacus is endemic to the central and eastern part of the Balkan Peninsula, and its distribution area includes E. Serbia (the literature record from Mt Radan (Jovanović 1984) is doubtful) and W., C., and S. Bulgaria (Fig. 7). It belongs to the West-East Moesian loristic element and in the wider sense it is a Pontic(Submediterranean) plant. It grows on grassy, siliceous rocky places in mountain and subalpine belt (Diklić & Stevanović 2012). Consolida uechtritziana (Pančić ex Huth) Soó, Oesterr. Bot. Z. 71: 236 (1922) – Ranunculaceae ≡ Delphinium uechtritzianum Pančić ex Huth Bot. Jahrb. Syst. 20(3): 378 (1895) [basion.] ≡ Delphinium uechtritzianum Pančić, Srpska Kralj. Bot. Bašta Beograd 1887: 5 (1888), [nom. inval., nom. nud.] Pančić collected this plant from Grdelica area, Derven Gorge in Southeastern Serbia in 1881. he name Delphinium uechtritzianum Pančić (1888) is included in the list of plants that were cultivated in the Botanical Garden in Belgrade in 1887. However, this name should be treated as “nomen nudum”, as Pančić did not provide any formal description for this plant. his species was described by Huth (1895: 378), on the basis of Pančić’s herbarium material. According to Huth (1895), C. uechtritziana belongs to the tribe Microcarpa, which, in addition to the widely-distributed Atlantic-Mediterranean species C. ajacis (L.) Schur and C. orientalis (J. Gay) Schrödinger, also includes the Balkan-West Anatolian plant C. phrygia (Boiss.) Soó as well as the Adriatic endemic species C. brevocornis (Vis.) Soó. C. uechtritziana difers from all other species of this tribe in having a longer spur and the presence of undivided lower bracts. V. Stevanović et al: Plant species and subspecies discovered by Dr. Josif Pančić 1 – distribution and loristic importance 257 Fig. 8. Distribution of the species Consolida uechtritziana (Pančić ex Huth) Soó in the Balkan Peninsula Fig. 9. Distribution of the species Erysimum commatum Pančić in the Balkan Peninsula and Romania Apart from the type locality, C. uechtritziana was found only in the surroundings of the city of Vranje (Fig. 8) and at these two localities it can safely be supposed to be extinct (Lakušić 1999). In the Atlas Florae Europaeae (Jalas & Suominen 1989: 71) it was mapped on several UTM 50×50 km squares in Kosovo and Metohija regions, Montenegro as well as from a single locality in north Peloponnesus in Greece. However, these records have not been conirmed either by herbarium material or ield research. According to Strid (2002: 25) this species is somewhat obscure and in Greece it may refer to a form of C. ajacis. his species belongs to the West Moesian loristic element and in a broader sense it belongs to the Submediterranean-continental subgroup of plants. It is representative of the group of ancient Mediterranean annual plants which spread along dry continental areas in the Balkans due to agricultural practice (Lakušić 1999). city of Svrljig. As he did not specify the type specimen, lectotypiication of this species was done by Polatschek & Snogerup (2002: 151) and for the type locality these authors marked Mt Malinik “in rupestribus m. Malinik Serb. Austr., 05−06.1872, Pančić s.n. [GOET (herb. Grisebachianum)]”. According to Polatschek (2013), the species E. commatum belongs to the E. difusum group of biennial plants with mostly cuneate petals. his group includes, in addition to widely distributed E. difusum Ehrh., the following species: E. andrzejowskianum DC., E. crassistylum C. Presl, and E. welchevii Urumov. It difers from the very similar E. andrzejowskianum by the shape of its petals and by the angle of siliquae forming, while from all the other species of this group it can be separated on the basis of the following morphological characters: stem base without tunic, petals up to 15 mm long and lowers not fragrant (Ančev & Polatschek 2006). his Balkan-Carpathian subendemic species is distributed in Bulgaria (Balkan foothills region, Znepole region and Mt Slavjanka), Serbia (Đerdap Gorge and limestone mountains of N.E. and E. Serbia), Republic of Macedonia (N.W., C. and S.W. mountains, including several uncertain records) and Greece (mountains of N.C. and N.E. regions). In Romania it is restricted to the Đerdap Gorge and the Southern parts of the Carpathian massif (Mt Banatske Planine) (Fig. 9). According to Polatschek (2013), E. commatum is also distributed in W. Serbia, Bosnia and Herzegovina and Montenegro, but on the basis of personal ield investigations, as well as inspection of numerous herbarium materials from these countries, it can be concluded that this species does not Erysimum commatum Pančić, Fl. Serbiae: 131 (1874) – Brassicaceae ≡ E. helveticum (Jacq.) DC. var. commatum (Pančić), Fl. Bulg. ed. 3: 523 (1948). = E. banaticum Griseb. ex Jáv., Magyar, Fl. 2: 439 (1924) ≡ E. sylvestre (Crantz) Scop. subsp. banaticum (Griseb. ex Jáv.) Borza, Bul. Grad. Bot. Univ. Cluj 26: 169 (1946) = E. saxosum Nyár., Bull. Sci. Acad. Reipubl. Popul. Roman., Sect. Sci. Biol., 7(2): 238 (1955) Pančić (1874: 131) described this plant from two localities in E. Serbia - Mt Malinik and Niševac near the 258 vol. 38 (2) grow in the western part of the Balkan Peninsula, e.g. Dinaric mountains. E. commatum belongs to the South Carpathian-West Moesian-North Scardo-Pindic, and in the wider sense to the South-European mountainous plants. his species inhabits open slopes and stony grasslands, foothills and mountains, predominantly on carbonate soils (Ančev & Polatschek 2006). It can also be found in oak up to the coniferous belt, at altitudes from 450 to 2100 m in the southern parts of its distribution range. Malcolmia orsiniana (Ten.) Ten. subsp. serbica (Pančić) Greuter & Burdet, Willdenowia 13: 94 (1983) – Brassicaceae ≡ M. serbica Pančić, Fl. Serbiae: 129 (1874) [basion.] ≡ M. serbica Pančić var. pancicii Janch., Oesterr. Bot. Z. 68: 167 (1919) ≡ M. maritima (L.) R. Br. var. serbica (Pančić) G. Beck, Glasn. Zem. Mus. Bosn. i Hercegov. 28: 103 (1916) [Fl. Bosn. Hercegov. 2(7)] ≡ M. illyrica Hayek, Denkschr. Akad. Wiss. Wien 94: 150 (1918) ≡ Wilckia serbica (Pančić) Halácsy, Oesterr. Bot. Z. 45: 174 (1895) ≡ Wilckia pancicii (Adamović) Halácsy, Oesterr. Bot. Z. 45: 174 (1895) ≡ W. serbica (Pančić) Halácsy var. illyrica Halácsy, Oesterr. Bot. Z. 45: 175 (1895) [“Wilckia illyrica”], nom. inval., pro syn. = M. pancicii Adamović, Oesterr. Bot. Z. 42: 405 (1892) = M. bassarana Petrović ex Fritsch, Verh. Zool.-Bot. Vereins Wien 45: 376 (1895), nom. inval., pro syn Pančić (1874: 129) described this plant from the locality Bučje in the foothills of Mt Tupižnica in E. Serbia. As the type specimen was not marked by the author, lectotypiication of the name M. serbica was done by Georgiou (2002: 164) and for the type locality this author marked Mt Tupižnica “[SE Serbia] “Mt Tupižnica”, May 1870, Pančić s.n. (BEO!)”. his taxon belongs to the Apennine-Balkan complex M. orsiniana (Ten.) Ten. in which a larger number of taxa of diferent ranks from species and subspecies to varieties were described. his Pančić taxon was later wrongly treated as a variety of widespread Mediterranean species M. maritima R. Br. var. serbica (Pančić) G. Beck. Greuter & Burdet (1984) divided species M. orsiniana into three subspecies: subsp. orsiniana which is widespread in the central Apennines and the Dinaric Alps from Slovenia, Croatia, Bosnia and Herzegovina to Montenegro, subsp. serbica (Pančić) Greuter & Burdet, with a range from N.E., E. Serbia and W. Bulgaria, over W. Macedonia and Albania to W. Greece (Fig. 10) and subsp. angulifolia (Boiss. & Heldr.) Stork distributed in Sterea Ellas (Mts Parnassus, Giona, Vardousia), Mt Olympus and the mountains of S.E. Macedonia and Fig. 10. Distribution of the subspecies Malcolmia orsiniana (Ten.) Ten. subsp. serbica (Pančić) Greuter & Burdet in the Balkan Peninsula S. Bulgaria (Central Rhodopes). Such a taxonomic point of view was accepted by Georgiou (2002), who recognized two subspecies in Greece: subsp. serbica and subsp. angulifolia. hese two subspecies are clearly chorologically separated in the central and southern parts of the Balkans, while in the western part of the Balkan Peninsula in S.E. Montenegro, M. orsiniana subsp. serbica borders with the type subspecies M. orsiniana subsp. orsiniana. However, there are diferent opinions on the taxonomy of M. orsiniana. hus, Jalas & Suominen (1994) recognized only two subspecies within the species M. orsiniana: type subspecies orsiniana and subsp. angulifolia, while the taxon M. serbica was considered as a synonym of subsp. angulifolia. Such a taxonomical concept was also accepted by Marhold (2011b). Despite the unresolved taxonomic status of this Pančić taxon, the concept proposed by Greuter & Burdet (1984) as M. orsiniana subsp. serbica is supported not only by morphological, but also chorological evidence. he genus Malcolmia belongs to the MediterraneanSubmediterranean genus of annual to biennial plants with the largest number of representatives distributed in the E. Mediterranean. M. orsiniana subsp. serbica belongs to the West Moesian-North-South ScardoPindic loristic element, and in a broader sense to the South-European mountainous subgroup of plants. Optimal habitats of this subspecies are limestone nitrophytic and stabilized screes and surrounding rocks, usually below the clifs or at the entrances of caves and rock shelters of the mountain to subalpine regions. V. Stevanović et al: Plant species and subspecies discovered by Dr. Josif Pančić 1 – distribution and loristic importance 259 Barbarea balcana Pančić Srpska Kralj. Bot. Bašta Beograd 1877: 6 (1888) – Brassicaceae ≡ B. rivularis Pančić, Glasn. Srpskog Učenog Društva 53: 174 (1883) [Elem. Fl. Bulg.: 14], [nom. illeg.] [non Loret, Bull. Soc. Bot. France 6: 90 (1859)]. = B. alpicola Murb., Acta Univ. Lund. 27(5): 170 (1892) Locus classicus: Mt Stara Planina, Midžor peak (Pančić 1883: 174) his species is closely related to the Balkan endemic species B. longirostris Velen. that is distributed in Serbia, Bulgaria, Republic of Macedonia, Albania and Greece (Jalas & Suominen 1994). B. balcana is a Balkan endemic plant distributed mostly in the mountains of the central part of the peninsula (Fig. 11) along the Stara Planina mountain chain from E. Serbia to C. Bulgaria, in the W. and C. Rhodopes, Mt Rila and Mt Pirin in Bulgaria (Asenov 1970). In the Balkans it is also present in the mountain massif Šar-planina from Mt Ljuboten to Mt Vraca and Mt Korab (Micevski 1995) as well as in the neighboring mountains of E. Albania (Uzundzhalieva et al. 2013); it is also recorded in Mt Prokletije (Tomović 2007). Isolated parts of the range are Mt Vranica in C. Bosnia (Lubarda 2013) and Mt Nemerečka in S. Albania and Kalo Nero in N.W. Greece (Uzundzhalieva et al. 2013). B. balcana is included in he IUCN Red List of hreatened Species. Version 2014.2. under the LC category, as there are no other immediate major threats reported to most of the subpopulations across its range (Uzundzhalieva et al. 2013). his species belongs to the Central-Southeast Dinaric-West-Central Moesian-North Scardo-Pindic loristic element, and in the broader sense to the group of Central-European mountainous plants. B. balcana inhabits damp places near streams, peat and tall herbs vegetation, mainly in siliceous mountains. Cardamine serbica Pančić, Add. Fl. Princ. Serb.: 111 (1884) - Brassicaceae ≡ C. maritima Port. ex DC. f. serbica (Pančić) Schultz, Bot. Jahrb. Syst. 32: 579 (1903). = C. serbica Pančić ex Asch. & Kanitz, Cat. Cormoph. Serb.: 76 (1877), nom. inval., nom. nud. = C. maritima subsp. maglicensis (Rohlena) Trinajstić, Suppl. Fl. Anal. Jugosl. 4: 8 (1976) ≡ C. maritima var. maglicensis Rohlena, Repert. Spec. Nov. Regni Veg. 3: 145 (1906). Pančić (1884: 111) described this plant from Mt Tara, between the village of Perućac and Derventa river Gorge. However, according to Flora Europea (Jones & Akeroyd 1993), Atlas Florae Europeae (Jalas & Suominen 1994) and Flora of Serbia (Jovanović-Dunjić 1972) this species was considered as a synonym of C. maritima Portenschl. ex DC. Only recently, Kučera et al. (2008) conirmed Fig. 11. Distribution of the species Barbarea balcana Pančić in the Balkan Peninsula the status of this plant at the species level. C. serbica belongs to the Apennine-Balkan monophyletic group C. maritima (Lihová et al. 2006) which encompasses four additional species: C. monteluccii Brilli-Catt. & Gubellini (Italy), C. ialae Fritsch (Bosnia and Herzegovina), C. rupestris (O.E. Schulz) K. Malý (Montenegro) and C. maritima DC. (Croatia and Montenegro) (Kučera et al. 2008). In addition, molecular analyses of the C. maritima group showed that the taxon C. maritima var. maglicensis described by Rohlena (1906) from Mt Maglić and C. serbica from Mt Tara represent, genetically, the same taxon (Kučera et al. 2008). herefore, besides the type locality in Mt Tara (Derventa river Gorge) in W. Serbia this species is also distributed in Mt Maglić (Piva river Gorge) in Montenegro (Fig. 12). his plant belongs to the Southeast-East-East Illyrian loristic element and in the wider sense to the Submediterranean-continental group of plants. C. serbica is restricted to the gorges of the Derventa and Piva rivers in shady limestone screes, which are refugial habitats for this relict plant in the Balkans. Sempervivum leucanthum Pančić, Glasn. Srpskog Učenog Društva 53: 190 (1883) [Elem. Fl. Bulg.: 30] – Crassulaceae Locus classicus: Mt Rila (Pančić 1883: 190) his species belongs to the group of Sempervivum species, with light colored, lemon yellow, yellowish, yellowish-green, (rarely at the base) pink petals, that are distributed from the Alps to the mountains of the Balkan Peninsula. Its closest relative is S. ciliosum Craib. which 260 vol. 38 (2) Fig. 12. Distribution of the species Cardamine serbica Pančić in the Balkan Peninsula Fig. 13. Distribution of the species Sempervivum leucanthum Pančić in the Balkan Peninsula some authors consider as a variety of S. leucanthum (Vălev 1970). S. leucanthum is also related with S. kindingeri Adamović from the Republic of Macedonia, S. Serbia and N. Greece, which according to some authors is a synonym of S. leucanthum (Hart 2002). However, according to a monograph on the genus (Praeger 1932), as well as some modern databases and Floras (Marhold 2011b; Greuter et al. 1984), all these taxa are treated as species. In addition, S. leucanthum is related to the eastern alpine species S. pittonii Schott, Nyman & Kotschy (Parnell & Favarger 1993). S. leucanthum is distributed only in Mt Rila in Bulgaria (Vălev 1970) and in the mountains of N.E. Greece (Menikon and Orvilos) (Hart 2002). It was also cited to occur on some other mountains in Bulgaria (Mts Vitoša, Pirin, Slavjanka and Central Rhodopes), as well as from the valley of the Struma river and Tundžanska plain (Vălev 1970) (Fig. 13). However, on the basis of inspection of the herbarium specimens deposited in SO and determined as S. leucanthum, it was found to be S. ciliosum: herefore, all the material of S. leucanthum from Bulgaria needs further taxonomic and chorological revision. It belongs to the Southwest Moesian loristic element, while in a broader sense to the South-European mountainous subgroup of plants. It grows on dry to moderately moist, predominantly siliceous rocks at an altitudinal range of 300-2000 m (Assyov et al. 2006). Beih. 30(1): 517 (1925) [Prodr. Fl. Penins. Balc. 1] ≡ V. alpestris Jord. f. orbelica (Pančić) Becker, Beih. Bot. Centralbl. 21(2): 345 (1910) Viola orbelica Pančić, Glasn. Srpskog Učenog Društva 53: 176 (1883) [Elem. Fl. Bulg.: 16] – Violaceae ≡ V. saxatilis F. W. Schmidt [subsp. macedonica] f. orbelica (Pančić) Hayek, Repert. Spec. Nov. Regni Veg. Pančić (1883: 176) described in the protologue this species from Mt Rila in Bulgaria. Erben (1985: 637) assumed that Pančić’s herbarium collection was destroyed during the bombing of Belgrade in 1942, and therefore designated a neotype from the material collected by Merxmüller & Zollitsch from Mt Pirin. However, on the basis of the specimen of V. orbelica collected by Pančić on Rila mountain deposited in BEOU, which unambiguously belongs to the original material, the lectotype was designated by Tomović et al. (2013), superseding the neotype of Erben. his regional Balkan endemic plant belongs to the section Melanium Gang. and is distributed on Mt Rila and Pirin in Bulgaria (Delipavlov 1979; Velchev et al. 1992; Petrova 2006), as well as in the eastern part of the Republic of Macedonia - Mt Osogovo, Mt Golak and Mt Plačkovica (Micevski 1995) (Fig. 14). It belongs to the Southwest Moesian loristic elements, while in the wider sense it is included into the SouthEuropean mountainous group of plants. Habitats of this violet are grassy, rocky places, screes and bushes on silicate geological substratum at an altitude of 1000-2000 m (Delipavlov 1979; Micevski 1995). Althaea kragujevacensis Pančić ex Diklić & Stevan., Proc. Fith Optima Meeting, Istanbul 1986: 525 (1993) – Malvaceae ≡ A. kragujevacensis Pančić, Fl. Serbiae: 200 (1874), in clavi, nom. inval., pro syn. in introduct. V. Stevanović et al: Plant species and subspecies discovered by Dr. Josif Pančić 1 – distribution and loristic importance 261 Fig. 14. Distribution of the species Viola orbelica Pančić in the Balkan Peninsula Fig. 15. Distribution of the species Althaea kragujevacensis Pančić ex Diklić & Stevan. in the Balkan Peninsula – A. taurinensis sensu Pančić, Fl. Serbiae: XXV (1874), in introduct. [non DC., Prodr. 1: 436 (1824)] Visiani & Pančić (1862: 444) described this species from several localities in Serbia (Mt Ovčar, Stjenik peak on Mt Jelica, near Užice and in Mt Mokra Gora). However, Grisebach in Ascherson & Kanitz (1877) was the irst botanist who considered E. subhastata as a variety of the East-European-Caucasian species E. agraria M. Bieb. and later, this concept was accepted by many other botanists (Hayek 1924; Smith & Tutin 1968; Janković & Nikolić 1972; Kuzmanov 1979) in 20th century. Morphological characters which separate the taxon E. subhastata from E. agraria are: stems branched in the upper part with non-lowering branches and lingulate-panduriform, glossy leaves (Hayek 1924; Janković & Nikolić 1972). his species is distributed mostly in the Dinaric mountain massif that includes river gorges in C. Bosnia, mountains and gorges of C. (Mt Durmitor) and S.E. Montenegro (Mt Prokletije), W., S.W. Serbia and Metohija (Mt Prokletije). A disjunct part of the species distribution range is situated in the northern part of the Republic of Macedonia - Mt Suva Gora (Matevski & Teofilovski 2004). here are no data for this species in the Flora of Albania, but Meyer (2011) found the species E. agraria in Mt Prokletije “hethi, Autstieg zum Shtegu i Dhenve” and it can be assumed that this record refers to E. subhastata. he species E. subhastata was cited for the Flora of Bulgaria (Kuzmanov 1979, sub. E. agraria M. B. var. subhastata (Vis. et Panč.) Griseb.) from the locality Popovica, Plovdiv area on the Trakijska plain. here are two additional herbarium specimens: west of village Krivina in the Soia area (SO) and near town of Gabrovo in the Mt Central Stara Planina (SOM). Nevertheless, following revision of the herbarium material as well as comparision with the material from W. Serbia it is Pančić (1874: 200) described this species in the Flora Principatus Serbiae, but he did not present any information on the locus classicus. Later, Diklić & Stevanović (1993) provided information about the type locality (Metino brdo near the city of Kragujevac) on the basis of Pančić’s herbarium material deposited in BEOU. Besides the type locality, this plant was found in only three localities (Fig. 15) in the vicinity of Kragujevac city. For two localities from the literature source (Veljović 1967), there are no herbarium specimens which could prove these records. A. kragujevacensis is a local endemic plant and belongs to the polymorphic complex of A. oicinalis L. which includes a great number of taxa distributed in southern and central Europe. It is related to A. taurinensis DC. from Italy and to A. armeniaca Ten. from central and southwestern Asia. his plant is included in the Red Data Book of Flora of Serbia in the category EX - globally extinct taxa (Diklić 1999). A. kragujevacensis belongs to the East Illyrian loristic element (restricted only to Šumadija region), and in a broader sense, to Central European group of plants. Although Pančić (1874) did not provide a speciic description of the habitat of this species, it may be assumed that it inhabited wetlands near rivers and streams, similar to A. oicinalis habitats. Euphorbia subhastata Vis. & Pančić, Mem. Reale Ist. Veneto Sci. 10: 444, tab. 7 (1862) – Euphorbiaceae ≡ E. agraria M. Bieb. var. subhastata Griseb ex Asch. & Kanitz, Cat. Cormoph. Serb.: 92 (1877) 262 vol. 38 (2) Fig. 16. Distribution of the species Euphorbia subhastata Vis. & Pančić in the Balkan Peninsula Fig. 17. Distribution of the species Haplophyllum boisserianum Vis. & Pančić in the Balkan Peninsula Table 1. Number of Pančić’s taxa recorded in the countries of the Balkan Peninsula and Romania Taxon BH CG AL x Picea omorika SR x Cerastium rectum subsp. petricola x x GR x x Heliosperma macranthum MK x x x x x x x x Heliosperma pusillum subsp. moehringiifolium x x Dianthus moesiacus x x Consolida uechtritziana x Erysimum commatum x x x x x x x x x x x x x x Malcolmia orsiniana subsp. serbica x Barbarea balcana x Cardamine serbica RM x Parietaria serbica Heliosperma pusillum subsp. monachorum BU x x Sempervivum leucanthum x Viola orbelica x x x x Althaea kragujevacensis Euphorbia subhastata x Haplophyllum boisserianum x Total 5 x 4 x x x x 5 14 x 9 7 5 2 V. Stevanović et al: Plant species and subspecies discovered by Dr. Josif Pančić 1 – distribution and loristic importance 263 Table 2. Pančić’s taxa, presented in this paper, and their corresponding chorological groups, subgroups and loristic elements Taxon Chorological group Chorological subgroup Floristic element Picea omorika Boreal Balkan-Boreal E. Dinaric Althaea kragujevacensis Central European S.E European (Balkan) E. Illyrian Euphorbia subhastata Pontic Pontic-(Submediterranean) C.-E. Illyrian Dianthus moesiacus Pontic Pontic-(Submediterranean) W.-E. Moesian Parietaria serbica Mediterraneansubmediterranean Submediterranean -(Pontic) W.-E. Moesian-S. CarpathianDobrogean Cardamine serbica Mediterraneansubmediterranean Submediterranean-continetal S.E.-E. Illyrian Cerastium rectum subsp. petricola Mediterraneansubmediterranean Submediterranean-continental S.W. Moesian-Macedonianhessalian Consolida uechtritziana Mediterraneansubmediterranean Submediterranean-continental W. Moesian Haplophyllum boisserianum Mediterraneansubmediterranean Submediterranean-continental E.Illyrian-N. Albanian Erysimum commatum Central-South European mountainous South European mountainous S. Carpathian-W. Moesian-N. Scardo-Pindic Heliosperma macranthum Central-South European mountainous South European mountainous S.E. Dinaric Heliosperma pusillum subsp. monachorum Central-South European mountainous South European mountainous C.-E. Dinaric-N. Scardo-Pindic Heliosperma pusillum subsp. moehringiifolium Central-South European mountainous South European mountainous W.-C. Moesian Malcolmia orsiniana subsp. serbica Central-South European mountainous South European mountainous W. Moesian-N.-S. ScardoPindic Sempervivum leucanthum Central-South European mountainous South European mountainous S.W. Moesian Viola orbelica Central-South European mountainous South European mountainous S.W. Moesian Barbarea balcana Central-South European mountainous Central European mountainous C.-S.E. Dinaric-W.-C. Moesian-N. Scardo-Pindic 264 vol. 38 (2) conirmed that E. subhastata does not grow in Bulgaria (Fig. 16). E. subhastata belongs to the Central-East Illyrian loristic element and in a broader sense to the Pontic(Submediterranean) group of plants. It is a typical calcicole plant that grows on rocky places and screes at altitudes from 500 to 1400 m, while E. agraria inhabits open steppe areas, meadows, as well as segetal habitats. he taxonomical status of E. subhastata is still unresolved and in future investigation it will be essential to establish whether it is a good species, clearly distinguished from E. agraria. Additionally, it is necessary to determine if the populations from the Dinaric Alps difer from the isolated population in the Republic of Macedonia. Haplophyllum boisserianum Vis. & Pančić, Mem. Reale Ist. Veneto Sci. 15: 14, tab. 20 (1870) – Rutaceae ≡ Ruta boisseriana (Vis. & Pančić) K. Malý ex Asch. & Graebn., Syn. Mitteleur. Fl. 7: 251 (1915) his species was described by Visiani & Pančić (1870: 14) from several ultramaic (serpentine) localities in W. Serbia (Panjak, Mt Zlatibor and Mt Mokra Gora). During the investigations that followed during the 20th and early 21st century, this species was recorded at several sites in E. Bosnia, W. and C. Serbia, Kosovo (Lubarda 2013; Tomović 2007; Rexhepi 2013) and N. Albania (Fig. 17). Compared with other representatives of the genus Haplophyllum in the Balkan Peninsula, this species occupies a relatively isolated position. Some authors considered the species H. albanicum (Bald). Bornm. as a synonym of H. boisserianum (The Plant List 2013). However, in relevant literature sources (Mayer & Wraber 1974; Micevski 2005), H. albanicum is treated as a valid species that is closely related more to H. patavinum (L.) Don il. than to H. boisserianum. hese three species belong to the section Haplophyllum and series Patavinae E. Mayer & T. Wraber. H. boisserianum is an East Illyrian-North Albanian loristic element, while in the broader sense it belongs to the Mediterranean-Submediterranean group of plants, more precisely to the sub-Mediterranean-continental group of plants, which represent ancient Mediterraneansub-Mediterranean species that are distributed deep in the continental part of the peninsula. his species belongs to a group of obligate serpentinophytes (Stevanović et al. 2003) and inhabits open and warm serpentinite rocky slopes of the alliances Potentillion visianii and CentaureoBromion ibrosi. DISCUSSION Ater more than 150 years of research of the lora of the Balkan Peninsula, taxa that Pančić discovered and described from Serbia, Montenegro and Bulgaria are mainly chorologicaly well-explored and their taxonomic status veriied. However, there are still a number of Pančić’s taxa whose distribution is still insuiciently known, and those with unclear taxonomic status. Such plants are, or should be, the subject of comparative morphological and molecular analyzes. Most Pančić plants that are presented in this paper belong to endemic plants of the Balkan Peninsula. Bearing in mind that in the 19th century, the lora of the Balkan Peninsula was still insuiciently known, it is understandable that Pančić considered that all plants he discovered were localy distributed. However, subsequent loristical surveys revealed that the highest number of taxa have wider distributions that include the territory of two or more Balkan countries (Table 1). he greatest number of Pančić’s taxa presented in this paper was recorded in Serbia (14) and Bulgaria (9), followed by Macedonia (7), Bosnia and Herzegovina, Albania and Greece (5), Montenegro (4) and Romania (2). Pančić’s taxa presented in this paper in phytogeographical terms can be classiied into several groups and subgroups of loristic elements (Table 2). he highest number of taxa belong to the Central-South European mountainous group (8) and MediterraneanSubmediterranean group (5), while a signiicantly smaller number belong to the Pontic (2) and Boreal and Central European (1 respectively). In the Central-South European mountainous group, Moesian (3 taxa) are the most abundant, while Dinaric and widespread plants are represented by a single taxon. Within the Mediterranean-Submediterranean group the most numerous are Submediterranean-continental (4 taxa), while Pontic species are represented equally with one Illyrian and one Moesian loristic element. CONCLUSION he aim of this paper was to overview, ater more than 150 years, the distribution of 17 species and subspecies (Pinaceae to Rutaceae) in the Balkan Peninsula and Romania that Josif Pančić discovered and published during his investigations of the lora of Serbia, Montenegro and Bulgaria in the period 1846-1888. Emphasis was given to the loristic and phytogeographical importance, as well as phylogenetical position and relation to the closest relatives of Pančić’s plants. A review of the number of Pančić’s taxa recorded in countries of the Balkan Peninsula was presented, as well as their corresponding chorological groups, subgroups and loristic elements. A complete analysis of the lora consisting of species and subspecies that Pančić discovered and described will be presented in the fourth article (Stevanović et al. in preparation), ater the presentation of all plant taxa. he inal conclusions will also be given upon completion of all four parts regarding the distribution of Pančić’s taxa at the species and subspecies rank. V. Stevanović et al: Plant species and subspecies discovered by Dr. Josif Pančić 1 – distribution and loristic importance 265 Acknowledgements — he Ministry of Education, Science and Technological Development of the Republic of Serbia supported this research through the Grant 173030 “Plant biodiversity of Serbia and the Balkans assessment, sustainable use and protection”. REFERENCES Ančev M & Polatschek A. 2006. he genus Erysimum (Brassicaceae) in Bulgaria. Ann. Naturhist. Mus. Wien B 107: 227–273. Ascherson P & Kanitz Á. 1877. Catalogus cormophytorum et anthophytorum Serbiae, Bosniae, Hercegovinae, Montis Scodri, Albaniae hucusque cognitorum, N. K. Papp, Kolozsvár. Asenov I. 1970. Barbarea R. Br. In: Jordanov D. (ed.), Flora na Narodna Republika B‘lgaria 4, pp. 392–400, B‘lgarskata Akademija na Naukite, Soija. Assyov B, Petrova A, Dimitrov D & Vassilev R. 2006. Conspectus of the Bulgarian vascular lora – distribution maps and loristic elements. In: Assyov B & Petrova A. (eds.). Conspectus of the Bulgarian vascular lora – distribution maps and loristic elements, 3rd ed., pp. 1–452, Bulgarian Biodiversity Fondation, Soia. Ball PW. 1993. Parietaria L. In: Tutin TG, Burges NA, Chater OA, Edmondson JR, Heywood VH, Moore DM, Valentine DH, Walters SM, Webb DA. (eds.), Flora Europaea 1 (2nd ed.), pp. 80–81, Cambridge University Press, Cambridge. Bouillé M & Bousquet J. 2005. Trans-species shared polymorphisms at orthologousnuclear gene loci among distant species in the conifer Picea (Pinaceae): implications for the long-term maintenance of genetic diversity in trees. Am. J. Bot. 91: 63–73. Conti F, Abbate G, Alessandrini A & Blasi C. 2005. (eds.) An annotated checklist of the Italian vascular lora. Palombi Editori, Roma. Čolić D. 1953. Staništa Pančićeve omorike na desnoj obali Drine. Zaštita prirode 4–5: 425–459 Delipavlov D. 1979. Violaceae Batsch. In: Jordanov D. (ed.), Flora na Narodna Republika B‘lgaria 7, pp. 338–395, B‘lgarskata Akademija na Naukite, Soija. Diklić N. 1999. Althaea kragujevacensis Pančić. In: Stevanović V. (ed.). Crvena knjiga lore Srbije 1, pp. 49–50. Iščezli i krajnje ugroženi taksoni. Ministarstvo za životnu sredinu Republike Srbije, Biološki fakultet Univerziteta u Beogradu, Zavod za zaštitu prirode Republike Srbije. Beograd. Diklić N & Stevanović V. 1993. Althaea kragujevacensis Pančić ex Diklić & Stevanović. Discussion of some taxonomical problems. In: 5th Optima Meeting Istanbul, 8-15. Sep. 1986., pp. 519–525. Istanbul. [Proceedings] Diklić N & Stevanović V. 2012. Dianthus L. In: Stevanović V. (ed.), Flora Srbije 2, pp. 491–557, Srpska Akademija nauka i umetnosti, Beograd. Erben M. 1985. Cytotaxonomische Untersuchungen an südosteuropäischen Viola-Arten der Sektion Melanium. Mitt. Bot. Staatssamml. Münch. 21: 339–740. Euro+Med 2006-. Euro+Med PlantBase - the information resource for Euro-Mediterranean plant diversity. Published on the Internet http://ww2.bgbm.org/EuroPlusMed/ [accessed 10.07.2014]. Farjon A. 2010. A Handbook of the World’s Conifers. Brill Academic Publishers, Leiden. Frajman B & Oxelman B. 2007. Reticulate phylogenetics and phytogeographical structure of Heliosperma (Sileneae, Caryophyllaceae) inferred from chloroplast and nuclear DNA sequences. Mol. Phylogenet. Evol. 43(1): 140–155. Fukarek P. 1951. Današnje rasprostranjenje Pančićeve omorike (Picea omorika Panč.) i neki podaci o njenim sastojinama. God. Biol. Inst. Sarajevo 3(1–2): 141–198. (1950). Georgiev T. 1966. Urticaceae. In: Jordanov D. (ed.), Flora na Narodna Republika B‘lgaria 3, pp. 164–170, B‘lgarskata Akademija na Naukite, Soija. Georgiou O. 2002. Malcolmia R. Br. In: Strid A & Tan K. (eds.) Flora Hellenica 2, pp. 156–165, A. R G. Gantner Verlag, Ruggel. Greuter W, Burdet M & Long G. (eds.) 1984. MedChecklist 1. Pteridophyta (ed. 2), Gymmnospermae, Dicotyledones (Acanthaceae-Cneoraceae). Conservatoire et Jardin botaniques Genève; Botanischer Garten & Botanisches Museu, Berlin-Dahlem. Hart H. 2002. Sempervivum L. In: Strid A & Tan K. (eds.), Flora Hellenica 2, pp. 309–313, A. R. G. Gantner Verlag K. G., Ruggell. Hayek A. 1924. Prodromus Florae peninsulae Balcanicae 1. Repert. Spec. Nov. Regni Veg. Beih. 30(1): 1–352. Huth E. 1895. Monographiae der Gattung Delphinium. Bot. Jahrb. 20(3): 321–416. Jalas J & Suominen J. 1986. (eds.) Atlas Florae Europaeae 7. he Committee for Mapping the Flora of Europe and Societas Biologica Fennica Vanamo, Helsinki. Jalas J & Suominen J. 1989. (eds.) Atlas Florae Europaeae 8. he Committee for Mapping the Flora of Europe and Societas Biologica Fennica Vanamo, Helsinki. Jalas J & Suominen J. 1994. (eds.) Atlas Florae Europaeae 10. he Committee for Mapping the Flora of Europe and Societas Biologica Fennica Vanamo, Helsinki. Janković MM & Nikolić V. 1972. Euphorbiaceae. In: Josifović M. (ed.), Flora SR Srbije 3, pp. 537–570, Srpska Akademija nauka i umetnosti, Beograd. Jones BMG & Akeroyd JR. 1993. Cardamine L. In: Tutin TG, Burges NA, Chater AO, Edmondson JR, Heywood VH, Moore DM, Valentine DH, Walters SM & Webb DA (eds.), Flora Europaea 1 (2nd ed.), pp 346–351, Cambridge University Press, Cambridge. Jovanović V. 1984. Nova nalazišta biljnih vrsta u jugoistočnoj Srbiji u okolini Leskovca. Naše stvaranje 31(1-2): 13–20. Jovanović-Dunjić R. 1972. Cardamine L. In: Josifović M. (ed.), Flora SR Srbije 3, pp. 245–265, Srpska Akademija nauka i umetnosti, Beograd. 266 vol. 38 (2) Krüssmann G. 1972. Handbuch der Nadelgeholze. Paul Parey, Berlin, Hamburg. Kučera J, Tremetsberger K, Vojtsa J & Marhold K. 2008. Molecular study of the Cardamine maritima group (Brassicaceae) from the Balkan and Apennine Peninsulas based on ampliied fragment length polymorphism. Plant. Syst. Evol. 275: 193–207. Kuzmanov B. 1979. Euphorbiaceae. In: Jordanov D. (ed.), Flora na Narodna Republika B‘lgaria 7, pp. 110–177, B‘lgarskata Akademija na Naukite, Soija. Lakušić D. 1999. Consolida uechtritziana (Pančić ex Huth) Soó. In: Stevanović V. (ed.): Crvena knjiga lore Srbije 1, pp. 107–108. Iščezli i krajnje ugroženi taksoni. Ministarstvo za životnu sredinu Republike Srbije, Biološki fakultet Univerziteta u Beogradu, Zavod za zaštitu prirode Republike Srbije, Beograd. Lihová J, Shimizu KK & Marhold K. 2006. Allopolyploid origin of Cardamine asarifolia (Brassicaceae): incongruence between plastid and nuclear ribosomal DNA sequences solved by a single-copy nuclear gene. Molec. Phylogenet. Evol. 39: 759–786. Liu T-S 1982. A new proposal for the classiication of the genus Picea. Acta Phytotax. Geobot. 33: 227–245. Lockwood JD, Aleksić JM, Zou J, Wang J, Liu J & Renner SS. 2013. A new phylogeny for the genus Picea from plastid, mitochondrial, and nuclear sequences. Mol. Phylogenet. Evol. 69(3): 717–727. Lubarda B. 2013. Horološka analiza balkanske endemične lore na teritoriji Bosne i Hercegovine. Doktorska teza, Prirodno-fakultet, Univerzitet u Banjoj Luci, Banja Luka. Lubarda B, Stupar V, Milanović Đ & Stevanović V. 2014. Chorological characterization and distribution of the Balkan endemic vascular lora in Bosnia and Herzegovina. Botanica Serbica 38(1): 167–184. Marhold K. 2011a. Caryophyllaceae. In: Euro+Med (2006-): Euro+Med PlantBase - the information resource for Euro-Mediterranean plant diversity. Published on the Internet http://ww2.bgbm.org/EuroPlusMed/ [accessed 10.07.2014]. Marhold K. 2011b. Crassulaceae. In: Euro+Med (2006): Euro+Med PlantBase - the information resource for Euro-Mediterranean plant diversity. Published on the Internet http://ww2.bgbm.org/EuroPlusMed/ [accessed 19.07.2014]. Mataruga M, Isajev D, Gardner M, Christian T & Thomas P. 2011. Picea omorika. he IUCN Red List of hreatened Species. Version 2014.2. <www.iucnredlist. org>. Downloaded on 30 June 2014. Matevski V & Teofilovski A. 2004. New Contributions for the lora of the Republic of Macedonia. Proceedings of the II-Congress of Ekologists of the Republic of Macedonia with international Participation, 25-29.10.2003, Ohrid. Special issues of Macedonian ecological Society, Skopje, 6: 384–389. Mayer E & Diklić N. 1967. Nomenclator Pancicianus. In: Josifović M (ed.), Pančićev zbornik u spomen 150. godišnjice njegovog rođenja – Recuel des travaux édité a l’occasion du 150 anniversaire de la naissance de Josif Pančić, pp. 3–26. Srpska Akademija nauka i umetnosti, Beograd. Mayer E & Wraber T. 1974. Die Gattung Haplophyllum Juss. in Jugoslawien. Phyton 16(1–4): 117–125. Meyer FK. 2011. Beiträge zur Flora von Albanien. Haussknechtia 15: 1–220. Micevski K. 1995. he Flora of the Republic of Macedonia I(3). Macedonian Academy of Sciences and Arts, Skopje. Micevski K. 2005. he Flora of the Republic of Macedonia I(6). Macedonian Academy of Sciences and Arts, Skopje. Negrean G & Dihoru G. 2009. Parietaria lusitanica L. subsp. serbica (Pančić) P.W. Ball. In: Negrean G & Dihoru G. (eds.), Cartea ro̧ie a plantelor vasculare din Rom̂nia, pp. 393–394, Editura Academiei Rom̂ne, Bucurȩti. Niketić M. 2012. Cerastium L. In: Stevanović V. (ed.), Flora Srbije 2, pp. 270–334, Srpska Akademija nauka i umetnosti, Beograd. Niketić M. 2014. Nomenclature review of the plants published by Josif Pančić (Nomenclator Pancicianus novus). Botanica Serbica 38(2): Niketić M & Stevanović V. 2007. A new species of Heliosperma (Caryophyllaceae) from Serbia and Montenegro. Bot. J. Linn. Soc. 154(1): 55–63. Niketić M & Stevanović V. 2012. Heliosperma (Rchb.) Rchb. In: Stevanović V. (ed.), Flora Srbije 2, pp. 342–356, Srpska Akademija nauka i umetnosti, Beograd. Pančić J. 1874. Flora Kneževine Srbije. [Flora Principatus Serbiae], Državna štamparija, Beograd. Pančić J. 1875. Elenchus plantarum vascularum quae eastate a. 1873. in Crna Gora legit Dr. J. Pančić, Societas Erudita Serbica [Srpsko učeno društvo], Belgradi [Beograd]. Pančić J. 1876. Eine neue Conifere in den östlischen Alpen. In der fürstl-serbischen Staatsdruckerei, Belgrad. Pančić J. 1883. Građa za Floru Kneževine Bugarske [Elementa ad loram principatus Bulgariae]. Glasnik Srpskog učenog društva 53: 161–231. Pančić J. 1884. Dodatak lori kneževine Srbije [Additamenta ad loram principatus Serbiae], Kralj.-srp. državna štamparija, Beograd. Pančić J. 1888. Regius Hortus Botanicus Belgradensis 1887. Enumeratio plantarum vascularium Florae Serbiae, Tipographia status, Belgradi. Parnell J & Favarger C. 1993. Sempervivum L. In: Tutin TG, Burges NA, Chater OA, Edmondson JR, Heywood VH, Moore DM, Valentine DH, Walters SM, Webb DA. (eds.), Flora Europaea 1 (2nd ed.), pp. 425–428, Cambridge University Press, Cambridge. Petković B, Tatić B, Marin P & Ilijin M. 1986-1988 (1989). he new community of the Serbian Ramonda (EdraianthoSeslerio-Ramondaetum serbicae) on the region of southwest Serbia. Priroda Vojvodine 12-14: 19–31. Petrova A. (ed.) 2006. Atlas of Bulgarian Endemic Plants. Gea-Libris Publishing House, Soia. Polatschek A. 2013. Revision der Gattung Erysimum V. Stevanović et al: Plant species and subspecies discovered by Dr. Josif Pančić 1 – distribution and loristic importance 267 (Cruciferae): Teil 5. Nord-, West-, Zentraleuropa, Rumänien und westliche Balkan-Halbinsel bis Albanien. Ann. Naturhist. Mus. Wien B 115: 72–218. Polatschek A & Snogerup S. 2002. Erysimum L. In: Strid A & Tan K. (eds.), Flora Hellenica 2, pp. 130–152, A.R.G. Gantner Verlag K.G., Ruggell. Praeger RL. 1932. An account of the Sempervivum group. he Royal Horticultural Society, London. Ran JH, Wei XX & Wang XQ. 2006. Molecular phylogeny and biogeography of Picea (Pinaceae): implications for phylogeographical studies using cytoplasmichaplotypes. Mol. Phylogenet. Evol. 41: 405–419. Reichenbach HGL. 1841. Deutsche Botaniker, 2. Das Herbarienbuch. Arnold, Dresden. Rexhepi F. 2013. Haplophyllum boiiserianum Vis. et Panc. In: Millaku F, Rexhepi F, Krasniqi E, Pajazitaj Q, Mala X & Berisha N. (eds.), Libri i kuq i lorës vasculare të Republikës së Kosovës 1, p. 132, Ministria e Mjedisit dhe Planiikimit Hapësinor të Kosovës, Prishtinë. Rohlena J. 1906. Beitrag zur Flora von Montenegro. Repert. Nov. Spec. Regni Veg. 3(36/37): 145–149. Smith AR & Tutin TG. 1968. Euphorbia L. In: Tutin TG, Heywood VH, Burges NA, Valentine DH, Walters SM & Webb DA. (eds.), Flora Europaea 2, pp. 213–226, Cambridge University Press, Cambridge. Stevanović V. 1992. Floristička podela teritorije Srbije sa pregledom viših horiona i odgovarajućih lornih elemenata. In: Sarić MR. (ed.) Flora Srbije 1, pp. 47–56, Srpska Akademija nauka i umetnosti, Beograd. Stevanović V. (ed.) 2012. Flora Srbije 2, Srpska Akademija nauka i umetnosti, Beograd. Stevanović V, Tan K & Iatrou G. 2003. Distribution of the endemic Balkan lora on serpentine I. – obligate serpentine endemics. Plant. Syst. Evol. 242: 149–170. Stojanoff N & Achtaroff B. 1935. Kritische Studien über die Nelken Bulgariens. Sbor. na Blg. Acad. Nauk. 29: 1–101. Strid A. 1997. Cerastium L. In: Strid A & Tan K. (eds.), Flora Hellenica 1, pp. 198–214, Koeltz Scientiic Books, Königstein. Strid A. 2002. Consolida (DC.) S.F. Gray. In: Strid A & Tan K. (eds.), Flora Hellenica 2, pp. 21–25, A.R.G. Gantner Verlag K.G., Ruggell. Tatić B & Petković B. 2012. Urticaceae Jussieu. In: Stevanović V. (ed.), Flora Srbije 2, pp. 88–99, Srpska Akademija nauka i umetnosti, Beograd. The Plant List 2013. Version 1.1. Published on the Internet; http://www.theplantlist.org/ (accessed 1st January). Thiers B. 2014. [continuously updated]. Index Herbariorum: A global directory of public herbaria and associated staf. New York Botanical Garden’s Virtual Herbarium. http:// sweetgum.nybg.org/ih. Tomović G. 2007. Fitogeografska pripadnost, distribucija i centri diverziteta balkanske endemične lore u Srbiji. Doktorska disertacija, Biološki fakultet, Univerzitet u Beogradu, Beograd. Tomović G, Vukojičić S & Niketić M. 2012. Rasprostranjenje taksona u Srbiji (areal karte sa UTM poljima 10×10 km). In: Stevanović V. (ed.), Flora Srbije 2, pp. 559–597, Srpska Akademija nauka i umetnosti, Beograd. Tomović G, Kuzmanović N, Barina Z, Đurović S, Jakovljević K & Vukojičić S. 2013. Nomenclatural notes on three names in Viola Sect. Melanium (Violaceae). Phytotaxa 123(1): 56–60. Tomović G, Niketić M, Lakušić D, Ranđelović V & Stevanović V. 2014. Balkan endemic plants in Central Serbia and Kosovo regions: distribution patterns, ecological characteristics and centres of diversity. Bot. J. Linn. Soc. 176(2): 173–202. Uzundzhalieva K, Economou G, Stevanović V & Kell SP. 2013. Barbarea balcana. he IUCN Red List of hreatened Species. Version 2014.2. <www.iucnredlist. org>. Downloaded on 30 June 2014. Vălev S. 1970. Sempervivum L. In: Jordanov D. (ed.), Flora na Narodna Republika B‘lgaria 4, pp. 644–649, B‘lgarskata Akademija na Naukite, Soija. Velchev VI, Kozhuharov SI & Anchev ME. (eds.) 1992. Atlas of the Endemic Plants in Bulgaria. Publishing House of Bulgarian Academy of Sciences, Soia. Velenovský J. 1891. Flora Bulgarica. Descriptio et enumeratio systematica plantarum vascularium in principatu Bulgariae sponte nascentium. Fr. Rivnáč Pragae [Prague]. Veljović V. 1967. Vegetacija okoline Kragujevca. Glasn. Prir. Muz. Beogradu. B 22: 5–109. Visiani R & Pančić J. 1862. Plantae serbicae rariores aut novae. Decas I. Mem. Reale Ist. Veneto Sci. 10: 425–450. Visiani R & Pančić J. 1865. Plantae serbicae rariores aut novae. Decas II. Mem. Reale Ist. Veneto Sci. 12: 461–478. Visiani R & Pančić J. 1870. Plantae serbicae rariores aut novae. Decas III. Mem. Reale Ist. Veneto Sci. 15: 1–21. 268 vol. 38 (2) REzIME Biljne vrste i podvrste koje je otkrio Dr. Josifa Pančić 1 – distribucija i loristički značaj Vladimir Stevanović, Vladimir Vladimirov, Marjan Niketić, Snežana Vukojičić, Ksenija Jakovljević, Biljana Lubarda and Gordana Tomović U ovom radu predstavljano je 17 vrsta i podvrsta koje je Josif Pančić otkrio i opisao tokom svojih istraživanja na području Srbije, Crne Gore i Bugarske u periodu 1846-1888. godina. Za sve taksone date su karte rasprostranjenja, zasnovane na sopstvenim terenskim istraživanjima, uvida u bogate herbarske zbirke (BEOU, BEO, SOM), kao i na pregledu obimne lorističke literature. Pored toga, za svaku biljnu vrstu ili podvrstu istaknuta je njena pripadnost određenom lorističkom elementu, kao i ekologija i tipovi staništa koje ove biljke naseljavaju. U ovom radu, obrađene su sledeće vrste i podvrste: Picea omorika (Pančić) Purk., Parietaria serbica Pančić, Cerastium rectum Friv. subsp. petricola (Pančić) H. Gartner, Heliosperma macranthum Pančić, Heliosperma pusillum (Waldst. & Kit.) Rchb. subsp. monachorum (Vis. & Pančić) Niketić & Stevan., Heliosperma pusillum (Waldst. & Kit.) Rchb. subsp. moehringiifolium (Uechtr. ex Pančić ) Niketić & Stevan., Dianthus moesiacus Vis. & Pančić, Consolida uechtritziana (Pančić ex Huth) Soó, Erysimum commatum Pančić, Malcolmia orsiniana (Ten.) Ten. subsp. serbica (Pančić) Greuter & Burdet, Barbarea balcana Pančić, Cardamine serbica Pančić, Sempervivum leucanthum Pančić, Viola orbelica Pančić, Althaea kragujevacensis Pančić ex Diklić & Stevan., Euphorbia subhastata Vis. & Pančić and Haplophyllum boisserianum Vis. & Pančić. Ostalih 48 Pančićevih vrsta i podvrsta biće predstavljeno u narednim sveskama časopisa “Botanica Serbica”. Ključne reči: Josif Pančić, endemična lora, rasprostranjenje vaskularnih biljaka, Balkansko poluostrvo