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Chaetanthus Smut

Scientific Name
Restiosporium chaetanthi
Scientific Author
Vánky
Taxonomy
Basidiomycota, Ustilaginomycetes, Ustilaginales, Ustilaginaceae
Status
Native Australian Species
Reliability
High
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Diagnostic Images

Host symptoms
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Caption
Restiosporium chaetanthi on Chaetanthus aristatus - HUV 19083. Scale bar = 1 cm.
Source
Roger Shivas DEEDI
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Diagnostic Images (2)
Diagnostic Notes
Sori filling the nuts with a black initially agglutinated, but finally granular-powdery mass of spore balls, inconspicuous, hidden by the somewhat spreading floral envelopes. Infection systemic; all capsules of a plant infected.

Spore balls globose, ovoid, ellipsoidal or elongate, 40–90 (–100) × 35–70 µm, yellowish to dark olivaceous brown, composed of tens of spores that separate by pressure.

Spores subpolyhedrally or polyhedrally irregular, often with subacute or acute points and also lines between 2 flattened sides, 9–13 (–14.5) × 7–11 µm, olivaceous brown; wall slightly uneven, 0.5–1.0 µm thick, thickest at the angles; in LM smooth, in SEM the free surface very finely and densely low-verruculose.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
07/12/2010 10:42 AEST
Last Updated
07/12/2010 10:42 AEST
Citation
Roger Shivas (2010) Chaetanthus Smut (Restiosporium chaetanthi ) Updated on 12/7/2010 10:42:54 AM 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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