Pleurotus fuscosquamulosus sp. nov. is described from South Africa. Th
is taxon belongs in Pleurotus subgenus Coremiopleurotus, members of wh
ich produce an Antromycopsis state. In addition to a description of th
e wild basidiomes an account is also given of basidiomes produced in c
ulture. Relationships of our new species are discussed. Finally an app
endix is included with the results of compatibility studies between P.
, fuscosquamulosus, P. cystidiosus and P. smithii.