Stilbotulasnella: a new genus in the Tulasnellaceae

Abstract

A new genus, Stilbotulasnella, with the single species Stilbotulasnella conidiophora, is described from material collected in Hawaii. The distinguishing features of the genus are (i) copious production of blastic conidia; (ii) scattered tulasnellaceous basidia; (iii) germination of conidia and basidiospores by budding; (iv) dolipore septa without parenthesomes. Conidia of S. conidiophora are blastic annelidic, dikaryotic; they are produced on mononematous conidiophores or conspicuous synnematous to sporodochial conidiomata. The basidiospores germinate by repetition, by germ tube, or by budding.