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Xerochloa smut

Scientific Name
Sporisorium xerofasciculatum
Scientific Author
R.G.Shivas, McTaggart & 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 xerofasciculatum on Xerochloa laniflora - BRIP 49682. Scale bar = 1 cm
Source
Roger Shivas DEEDI
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Diagnostic Images (4)
Diagnostic Notes
Sori destroying the unit inflorescences, comprising all (1–4) spikelets and the woolly rachis, leaving intact the floral bracts, appearing as a cylindrical often curved body, 10–25 mm long and 2–5 mm wide, protruding beyond the coriaceous spathe, covered by a thick grey peridium that ruptures irregularly exposing the blackish brown powdery mass of loose spore balls, spores and few sterile cells surrounding numerous (more than 10) long filiform columellae.

Spores when mature solitary, globose, subglobose, ellipsoidal to subpolyhedrally slightly irregular, 5.5–10.5 × 5.0–9.0 µm, yellowish brown; wall uniformly thick to slightly uneven, 0.5–0.8 µm, finely and moderately densely verruculose; spore profile smooth to finely serrulate.

Sterile cells solitary, in irregular groups, in rows or fascicles of chains; individual cells globose, ellipsoidal, elongate, irregular with flattened sides, 6.5–11.0 µm long, hyaline; wall c. 0.5 µm thick, smooth.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
09/12/2010 02:07 AEST
Last Updated
09/12/2010 14:07 AEST
Citation
Roger Shivas (2010) Xerochloa smut (Sporisorium xerofasciculatum) Updated on 12/9/2010 2:07:11 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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