Corticium praticola Kotila; an Interesting Basidiomycete occurring in England

Abstract

THE usual forms of Rhizoctonia when grown on agar culture remain sterile, and are differentiated mainly on the basis of vegetative characters. During a study of the occurrence of Rhizoctonia solani Kuhn in England, a number of isolates falling within the limits of the form genus Rhizoctonia regarding vegetative characters formed basidiospores freely on agar cultures. These isolates were afterwards identified as Corticium praticola Kotila¹, although the measurements of basidia, sterigmata and spores were all slightly larger than those given by Kotila.