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

Published online by Cambridge University Press:  01 March 1998

T. K. GOH  and
K. D. HYDE
T. K. GOH
Affiliation:
Department of Ecology and Biodiversity, The University of Hong Kong, Pokfulam Road, Hong Kong
K. D. HYDE
Affiliation:
Department of Ecology and Biodiversity, The University of Hong Kong, Pokfulam Road, Hong Kong
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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.

Type
Research Article
Information
Mycological Research , Volume 102 , Issue 3 , March 1998 , pp. 308 - 312
Copyright
The British Mycological Society 1998

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