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Dichanthium smut

Scientific Name
Sporisorium bothriochloae
Scientific Author
(L. Ling) 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 bothriochloae on Dichanthium fecundum - BRIP 49672. Scale bar = 10 µm
Source
Roger Shivas DEEDI
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Diagnostic Images (4)
Diagnostic Notes
Sori in some ovaries of an inflorescence, long-cylindrical or fusiform, tapering at both ends, 5–13 mm long, 1–2 mm wide, protruding beyond the glumes, covered by a pale yellowish brown rather tough peridium that dehisces from its apex exposing a blackish brown granular mass of spore balls surrounding 1 or 2 simple tapering sometimes branched columellae.

Spore balls rather permanent, ellipsoidal to usually irregular, polyhedral, oblong, fusiform or even bent, 40–180 (–200) × 30–100 (–120) µm, yellowish to reddish brown; larger balls subopaque, composed of tens or hundreds of spores that separate by pressure.

Spores slightly dimorphic, globose, subglobose, ellipsoidal or subpolyhedrally slightly irregular, 10.0–14.5 × 8–13 µm, yellowish brown. Inner spores of larger balls paler; wall uniformly c. 0.5 µm thick, apparently smooth to finely punctate. Outer spores darker; wall even or slightly uneven, 0.5–0.8 µm thick, finely densely verrucose-echinulate; spore profile smooth, delicately wavy or very finely serrulate on the free surface of the outer spores.

Sterile cells absent.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
22/11/2010 02:08 AEST
Last Updated
23/11/2010 15:18 AEST
Citation
Roger Shivas (2010) Dichanthium smut (Sporisorium bothriochloae) Updated on 11/23/2010 3:18:15 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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