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Themeda ovary smut

Scientific Name
Sporisorium anthistiriae
Scientific Author
(Cobb) Vánky
Taxonomy
Basidiomycota, Ustilaginomycetes, Ustilaginales, Ustilaginaceae
Status
Native Australian Species
Reliability
High
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Diagnostic Images

Light micrograph
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Caption
Sporisorium anthistiriae on Themeda triandra - BRIP 46775. Scale bar = 10 µm
Source
Roger Shivas DEEDI
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Diagnostic Images (3)
Diagnostic Notes
Sori in scattered ovaries (awn present), cylindrical, often slightly bent, 10–30 mm long, 1.5–2.0 mm wide, at first covered by a yellowish peridium that ruptures longitudinally exposing the black granular-powdery mass of spore balls and several filiform columellae.

Spore balls rather permanent, ovoid to usually elongate or irregular, 30–170 µm long, reddish to blackish brown, composed of a few dozen to several hundred spores.

Spores dimorphic. Outer spores globose, subglobose, ovoid to slightly irregular, 9–14 × 8–12 µm, dark reddish brown; wall uniformly 1.0–1.5 µm thick; free surface densely and moderately coarsely verruculose-echinulate. Inner spores polyhedrally irregular, yellowish brown, thin-walled (c. 0.5 µm), apparently smooth.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
22/11/2010 12:55 AEST
Last Updated
23/11/2010 15:14 AEST
Citation
Roger Shivas (2010) Themeda ovary smut (Sporisorium anthistiriae) Updated on 11/23/2010 3:14:31 PM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

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