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Heteropogon inflorescence smut

Scientific Name
Sporisorium caledonicum
Scientific Author
(Pat.) Vánky
Taxonomy
Basidiomycota, Ustilaginomycetes, Ustilaginales, Ustilaginaceae
Status
Native Australian Species
Reliability
High
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Diagnostic Images (4)
Diagnostic Notes
Sori occupying the entire inflorescence, cylindrical, 5–30 mm long or longer, 0.5–1.5 mm wide, partly enclosed by the uppermost leaf sheath, first covered by a pale brown peridium that ruptures early and becomes lacerated exposing the black agglutinated to granular-powdery mass of spore balls and several long filiform columellae. Peridium composed of longitudinally arranged firmly united rows of elongate hyaline fungal cells that have ±lost their individuality.

Spore balls globose, ovoid, ellipsoidal to elongate or irregular, 30–110 (–130) × 25–70 µm, dark reddish brown to opaque, composed of numerous (25?–150? or more?) rather firmly united spores.

Spores subglobose, ellipsoidal to subpolyhedrally irregular, 8–13 (–14) × 7–12 µm, dimorphic. Outer spores dark reddish brown; wall slightly uneven, 1.0–1.5 µm thick, rather densely and distinctly punctate-echinulate; spore profile wavy or very finely serrulate. Inner spores paler, thin-walled, c. 0.5 µm, apparently smooth to very finely punctate.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
22/11/2010 02:18 AEST
Last Updated
23/11/2010 15:18 AEST
Citation
Roger Shivas (2010) Heteropogon inflorescence smut (Sporisorium caledonicum) Updated on 11/23/2010 3:18:49 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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