The Genus Phlebia

Abstract
A revision of the genus Phlebia based on 1560 collections in 25 herbaria is presented. The commonest spp., as indicated by synonymy and number of collections, are P. radiata and P. albida. Novelties based on morphological variation include Phlebia atkinsoniana from New York, P. argentinensis from Argentina, P. celtidis on Celtis from Idaho, P. cystidiata Jackson on Alnus rubra from California, P. subabida in Abies magnifica from California, P. canadensis on Acer, etc. from Ontario, and P. murrillii on Pinus from Florida. Five spp. were not available for study and 9 sp. previously assigned to Phlebia were excluded. The genus PHAEOPHLEBIA is proposed for P. strigoso-zonata (-Merulins strigoso-zonatusSchn. ) which has 28 synonyms. Tendencies of development within the genus are noted, but it is suggested that when 78% of the spp. treated are represented by less than 5% of the specimens studied, conclusions are difficult to make.

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