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Alexgeorgea Smut

Scientific Name
Restiosporium restionum
Scientific Author
(Nees) 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
Restiosporisorium restionum on Chordifex microcodon - BRIP 45344. Scale bar = 5 mm.
Source
Roger Shivas DEEDI
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Diagnostic Images (3)
Diagnostic Notes
Sori in all capsules of an infected plant, swollen, hidden by the floral envelopes, replacing the seeds with a black semi-agglutinated to granular-powdery mass of spore balls; infected male plants transformed into female plants with sori.

Spore balls subglobose, ellipsoidal, elongate, usually ±irregular, 40–80 (–100) × 30–60 (–70) µm, dark olivaceous brown to subopaque, persistent, composed of tens of tightly compressed spores that separate by strong pressure.

Spores subpolyhedrally or polyhedrally irregular, more rarely rounded, often with a short acute tip at the angles and narrow lines on the surface, 9.5–15.0 × 7–11 µm, olivaceous brown; wall slightly uneven, 1.0–2.5 µm thick; free surface slightly convex; in SEM with small warts.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
07/12/2010 02:24 AEST
Last Updated
07/12/2010 14:24 AEST
Citation
Roger Shivas (2010) Alexgeorgea Smut (Restiosporium restionum ) Updated on 12/7/2010 2:24:30 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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