A new variety of Epidermophyton floccosum is described. The cultures are characterized by a dark brown pigment staining the undersurface and medium. They show antibiotic activity against Torulopsis globosa and Cryptococcus diffluens.
Frágner P. (1968): Epidermophyton floccosum (Harz) Langeron et Milochevitch var. nigricans, var. nova. – Česká Mykologie 22(3): 202–205.