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

Examination of herbarium specimens and newly collected basidiomes combined with molecular analyses of representatives of several different taxa has un covered the existence of a new Phaeocollybia species from Washington, Orego n, and California. Phaeocollybia pleurocystidiata represents the first spec ies described from the United States and Canada known to exhibit a vernal p henology. Morphological and molecular comparison of the type of P. carmanah ensis with newly collected material reveals it to be conspecific with the e arlier named P oregonensis; an emended description of P. oregonensis is pro vided.