Abstract
The asexual and cultural characteristics of a number of Australian isolates of a Pythium causing equine phycomycosis are described. Oospores were not found which precludes positive identification. Zoospores were induced to form after growth in a defined medium. They are ovoid to reniform, biflagellate with flagella arising from a common point within a prominent lateral groove. The groove is overarched by outgrowths from the zoospore. Anterior flagella are of the tinsel type and are shorter than the posterior whiplash flagellum. X-ray diffraction analysis of cell walls failed to demonstrate the presence of cellulose I. Chromatograms of cell wall hydrolysates indicated that glucose is the major component with small contributions being made by mannose, galactose and rhamnose.
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