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Cenchrus ovary smut

Scientific Name
Sporisorium cenchri-elymoidis
Scientific Author
Vánky & R.G. Shivas
Taxonomy
Basidiomycota, Ustilaginomycetes, Ustilaginales, Ustilaginaceae
Status
Native Australian Species
Reliability
High
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Diagnostic Images

Scanning electron micrograph
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Caption
Sporisorium cenchri-elymoidis on Cenchrus elymoides - BRIP 26491. Scale bar = 1 µm
Source
Desley Tree DEEDI
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Diagnostic Images (4)
Diagnostic Notes
Sori in the spikelets infecting 1 or several in the burrs (clusters of spikelets), cylindrical, 8–15 mm long, 1.0–1.5 mm wide, at first covered by a greyish brown peridium that ruptures from its apex exposing the blackish brown, initially agglutinated later powdery mass of loose spore balls and spores surrounding a well-developed tapering central columella up to 25 mm long.

Spore balls variable, dark yellowish brown, composed of many readily separating spores.

Spores subpolyhedrally or polyhedrally irregular, more rarely globose or ellipsoidal, 8–12 × 7.0–9.5 µm, yellowish brown; wall slightly unevenly thick, 0.5–1.0 µm, somewhat thicker at the angles and with several rounded thinner areas that appear as depressions under SEM; surface very finely densely punctate-verruculose; spore profile smooth.

Sterile cells not seen.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
22/11/2010 02:47 AEST
Last Updated
23/11/2010 15:19 AEST
Citation
Roger Shivas (2010) Cenchrus ovary smut (Sporisorium cenchri-elymoidis) Updated on 11/23/2010 3:19:36 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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