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Sarga smut

Scientific Name
Sporisorium australasiaticum
Scientific Author
Vánky & R.G. Shivas
Taxonomy
Basidiomycota, Ustilaginomycetes, Ustilaginales, Ustilaginaceae
Status
Native Australian Species
Native Australian Species
Reliability
High
High
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Diagnostic Images (3)
Diagnostic Notes
Sori in the spikelets destroying the inner floral organs, ±hidden by the outermost floral envelopes, globose to ovoid, 1–2 mm long, 1.0–1.5 mm wide, at first covered by a thick brown peridium that ruptures irregularly exposing the dark brown powdery mass of spores and sterile cells surrounding a simple central columella sometimes with short apical branches. Rarely, the sori occupying 1 or several racemes or entire inflorescence branches, then cylindrical and up to 30 mm long.

Spores when mature solitary, subglobose, ovoid to broadly ellipsoidal, 8–11 × 7.5–9.5 µm, yellowish brown; wall uniformly c. 0.5 µm thick, with a paler rounded area 1.0–1.5 µm diam., probably a germ pore; spore surface in LM finely verruculose; spore profile smooth to very finely serrulate; in SEM finely echinulate, between the spines densely and finely verruculose.

Sterile cells in small groups; individual cells usually irregular with flattened contact sides, 6–16 µm long, hyaline; wall uniformly c. 0.5 µm thick, smooth.
More Information
Specimen Contact
Roger Shivas
Author
Roger Shivas
Created
22/11/2010 01:46 AEST
Last Updated
23/11/2010 15:16 AEST
Citation
Roger Shivas (2010) Sarga smut (Sporisorium australasiaticum) Updated on 11/23/2010 3:16:15 PM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

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