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Mycologia Volume 102, 2010 - Issue 5
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Original Articles

Morchella tomentosa: a unique belowground structure and a new clade of morels

Franck O.P. StefaniCorrespondenceFranck.Stefani@RNCan-NRCan.gc.ca
,
Serge Sokolski Département des sciences du bois et de la forêt, Faculté de foresterie, de géographie et de géomatique, 1030 avenue de la Médecine, Pavillon C.-E.-Marchand, Université Laval, Québec, QC, G1V 0A6 Canada
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Trish L. Wurtz Boreal Ecology Cooperative Research Unit, USDA Forest Service, Box 756780, University of Alaska in Fairbanks, Fairbanks, Alaska, USA 99775-5500
,
Yves Piché Département des sciences du bois et de la forêt, Faculté de foresterie, de géographie et de géomatique, 1030 avenue de la Médecine, Pavillon C.-E.-Marchand, Université Laval, Québec, QC, G1V 0A6 Canada
,
Richard C. Hamelin Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 10380, Stn. Sainte-Foy, Québec, QC, G1V 4C7 Canada
,
J. André Fortin Département des sciences du bois et de la forêt, Faculté de foresterie, de géographie et de géomatique, 1030 avenue de la Médecine, Pavillon C.-E.-Marchand, Université Laval, Québec, QC, G1V 0A6 Canada
&
Jean A. Bérubé Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 10380, Stn. Sainte-Foy, Québec, QC, G1V 4C7 Canada
show all
Pages 1082-1088 | Received 20 Nov 2009, Accepted 05 Mar 2010, Published online: 20 Jan 2017
 
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Abstract

Mechanisms involved in post-fire morel fructification remain unclear. A new undescribed belowground vegetative structure of Morchella tomentosa in a burned boreal forest was investigated north of Fairbanks, Alaska. The name “radiscisclerotium” is proposed to define this peculiar and elaborate below-ground vegetative structure of M. tomentosa. Bayesian and maximum parsimony analyses based on ITS rRNA regions and nLSU gene strongly supported a new clade composed of M. tomentosa within the genus Morchella.

This work was funded by the United States Department of Agriculture (USDA). The financial assistance provided by the NSERC is gratefully acknowledged. The authors thank Dr. M. Kuo for his critical view of the manuscript and the two anonymous reviewers for their thoughtful comments concerning the earlier version of this article.

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