Notes on European polypores-II. Notes on Poria

A note on lampro- and skeletocystidia and the introduction of the new term ‘gloeoplerous hyphae’ for the hyphal system that often produces the gloeocystidia in the hymenium is followed by a historical survey of the generic names proposed for resupinate and effused polypores (the so-called porias) and by an enumeration of these names and their type species together with a key to these species as far as they occur in Europe. Emended descriptions are given for Chaetoporellus Bond. & S., Chaetoporus P. Karst., and Schizopora Velen., while the name Perenniporia Murrill is re-introduced for the group of Poria medulla-panis sensu Pers., the species now often taken as type of the name Poria Pers. per S. F. Gray. It is proposed that this last-mentioned name be retained for the as yet unclassified porias. Amyloporia Bond. & S. is discussed. Some remarks are made on a redefined genus Oxyporus; it is treated as distinct from Rigidoporus. The bulk of the paper is made up of discussions on individual species, in alphabetical order. A recapitulation briefly reviews many conclusions about specific names. Poria romellii Donk and Sistotrema eluctor Donk are new species introduced to replace Poria byssina Romell and Poria onusta (P. Karst.) Sacc. of modern authors. New combinations are made with Chaetoporus (1), Cristella (1), Schizopora (1), Perenniporia (2) and Rigidoporus (1).