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Lignicolous freshwater Ascomycota from Thailand: Micropeltopsis quinquecladiopsis sp. nov.

Published online by Cambridge University Press:  01 June 1999

E. B. GARETH JONES
Affiliation:
Department of Biology and Chemistry, City University, Tat Chee Avenue, Kowloon, Hong Kong Department of Ecology and Biodiversity, Hong Kong University, Pokfulam Road, Hong Kong
S. W. WONG
Affiliation:
Department of Ecology and Biodiversity, Hong Kong University, Pokfulam Road, Hong Kong
SOMSAK SIVICHAI
Affiliation:
National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, 73/1 Rama VI Road, Rajdhevee, Bangkok 10400, Thailand
D. W. T. AU
Affiliation:
Department of Biology and Chemistry, City University, Tat Chee Avenue, Kowloon, Hong Kong
NIGEL L. HYWEL-JONES
Affiliation:
National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, 73/1 Rama VI Road, Rajdhevee, Bangkok 10400, Thailand
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Abstract

A new freshwater ascomycete Micropeltopsis quinquecladiopsis sp. nov. was collected on submerged twigs in a stream in Thailand. The fungus is described at the light microscope, scanning and transmission electron microscope level. Distinctive features are the appendaged 1-septate hyaline ascospores. The appendage arises as an outgrowth of the episporium from a basal stalk, then divides into five arms (three long and two short). The episporium and appendages are surrounded by an indistinct (at light microscope level) mucilaginous layer. The fungus is assigned to the Dothideales (Trichothyriaceae). Ascospore appendage ontogeny is compared with those of marine Ascomycota (Halosphaeriales).

Type
Research Article
Copyright
© The British Mycological Society 1999

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