A new hyphomycete genus, Conioscyphopsis, from wood submerged in a freshwater stream and a review of Conioscypha

T. K. GOH; K. D. HYDE

doi:10.1017/S0953756297004942

Abstract

Conioscypha is reviewed, with a discussion on generic concepts and conidiogenesis. A new genus, Conioscyphopsis, is described from submerged wood in Australia, and a key to species in both genera is provided. Conioscyphopsis australiensis sp. nov. is similar to species of Conioscypha in lacking conspicuous conidiophores, but its dematiaceous, unicellular conidia are produced from ampulliform conidiogenous cells borne on semi-immersed hyphae. Conioscyphopsis differs from Conioscypha mainly in its conidiogenesis. Conidiogenesis in Conioscypha is intermediate between ‘annellidic’ and ‘phialidic’, single conidia being produced endogenously within indeterminate, percurrently proliferating conidiogenous cells. In Conioscyphopsis, conidiogenesis is ‘enteroblastic-phialidic’, solitary conidia being produced exogenously from determinate, but percurrently regenerating conidiogenous cells.

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A new hyphomycete genus, Conioscyphopsis, from wood submerged in a freshwater stream and a review of Conioscypha

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A new hyphomycete genus, Conioscyphopsis, from wood submerged in a freshwater stream and a review of Conioscypha

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