Revision of Torula species. Rutola, a new genus for Torula graminis

Abstract

The terminal or intercalary conidiogenous cells of Torula graminis are monoblastic and integrated on micronematous conidiophores. The conidia are phragmosporous and consist of simple or branched chains of acrogenous, brown, minutely verruculose cells which frequently fragment into one- or many-celled segments. Torula graminis differs from T. herbarum, the type species of Torula, in lacking the diagnostic coronate conidiogenous cell that is characteristic of the genus Torula and is, therefore, placed in the new Hyphomycete genus Rutola, as Rutola graminis n.comb.