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Pseudoraphis smut

Scientific Name
Sporisorium chamaeraphis
Scientific Author
(Syd.) 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
Sporisorium chamaeraphis on Pseudoraphis paradoxa - BRIP 7805. Scale bar = 5 mm
Source
Roger Shivas DEEDI
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Diagnostic Images (3)
Diagnostic Notes
Sori in completely destroying the inflorescence, 10–20 mm long, 2–3 mm wide, partially concealed by the uppermost leaf sheath, at first covered by a brownish peridium that flakes away revealing a dark brown, initially agglutinated later granular-powdery mass of spore balls mixed with long filiform columellae.

Spore balls subglobose, ellipsoidal or elongate, rarely irregular, 30–70 (–80) × 30–50 (–60) µm, dark reddish brown, composed of 15–100 or more readily separating spores.

Spores usually subpolyhedrally irregular, more rarely subglobose or broadly ellipsoidal, 9–13 (–14) × 7–11 µm, yellowish brown to reddish brown; wall slightly uneven, 1.0–1.5 µm thick, thickest at the angles, finely and densely punctate; free surfaces of the peripheral spores in a ball finely and densely verrucose-echinulate, causing the spore profile to appear finely wavy to serrulate.

Sterile cells not seen.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
22/11/2010 03:02 AEST
Last Updated
23/11/2010 15:20 AEST
Citation
Roger Shivas (2010) Pseudoraphis smut (Sporisorium chamaeraphis) Updated on 11/23/2010 3:20:48 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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