A revision of Collybia s.l. in the northeastern United States and adjacent Canada

Roy E. Halling

Inst. of Syst. Botany, The New York Botanical Garden, Bronx, NY 10458-5126

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This revised edition came about partly because the 1983 hardcopy went out-of-print (or out-of-stock) while still seeming to be in demand. Also, with continued field observations in both temperate and tropical regions, it became apparent to many of us that three genera could be easily recognized utilizing ecological characters as well as macro- and microscopic ones. These characters are utilized in a Key to Genera. A more detailed discussion is found in Antonín, et al. (1997). The three recognized genera are: Collybia, Rhodocollybia, and Gymnopus.

I have not incorporated the Introductory sections dealing with history, nomenclature, taxonomic features, and materials and methods because nothing has really changed in those sections (but see the paper cited above). What I have provided here are a revised taxonomy including keys, updated descriptions of taxa, and images of microscopic features as well as color images of basidiomata. An Epithet Locator lists epithets of taxa that will provide links to taxa that you know and love but have no idea in which genus they might be placed currently.

[Revised edition, by Roy E. Halling, © 1997 (originally © by The New York Botanical Garden as "The genus Collybia (Agaricales) in the Northeastern United States and adjacent Canada," Mycologia Memoirs 8: 1-148. 1983)]

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