Phaeocollybia in western North America 2: the vernal P. pleurocystidiata sp nov, and P. carmanahensis reconsidered

摘要

Examination of herbarium specimens and newly collected basidiomes combined with molecular analyses of representatives of several different taxa has uncovered the existence of a new Phaeocollybia species from Washington, Oregon, and California. Phaeocollybia pleurocystidiata represents the first species described from the United States and Canada known to exhibit a vernal phenology. Morphological and molecular comparison of the type of P. carmanahensis with newly collected material reveals it to be conspecific with the earlier named P oregonensis; an emended description of P. oregonensis is provided. [References: 13]