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Whiteochloa smut

Scientific Name
Tilletia cape-yorkensis
Scientific Author
Vánky & R.G. Shivas
Taxonomy
Basidiomycota, Exobasidiomycetes, Tilletiales, Tilletiaceae
Status
Native Australian Species
Reliability
High
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Diagnostic Images

Host symptoms
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Caption
Tilletia cape-yorkensis on Whiteochloa airoides - BRIP 27011. Scale bar = 5 mm
Source
Roger Shivas DEEDI
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Diagnostic Images (3)
Diagnostic Notes
Sori in some ovaries of an inflorescence, forming swollen broadly fusiform or obovoid brown bodies, with a narrow basal part and a shortly apiculate tip, more rarely lemon-shaped, 3–8 mm long, 1–2 mm wide, covered by the thick pericarp that ruptures longitudinally at maturity exposing the black semi-agglutinated to powdery mass of spores mixed with sterile cells.

Spores globose, subglobose to usually broadly ellipsoidal or ovoid, 24–32 (–40) × (20–) 23–28 (–32) µm, medium yellowish to medium reddish brown, never opaque; wall uniformly 3.5–4.5 µm thick, including the 3–4 µm high conical or cylindrical scale-like projections with flattened blunt or subacute tips; in surface view the ornamentation gives an irregularly finely to rather coarsely reticulate pattern with dark polygonal areas, 8–13 per spore diameter.

Sterile cells subglobose, ovoid, ellipsoidal to slightly irregular, 16–28 µm long, pale yellowish brown; wall (1–) 2–4 (–5) µm thick, smooth, but also punctate or verrucose (immature spores), rarely with a small appendage.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
09/12/2010 02:39 AEST
Last Updated
09/12/2010 14:39 AEST
Citation
Roger Shivas (2010) Whiteochloa smut (Tilletia cape-yorkensis) Updated on 12/9/2010 2:39:13 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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