Triodiomyces altilis (Syd.) McTaggart & R.G. Shivas


Ustilago altilis Syd.


Sori in and around the apex of stems and leaf sheaths, concealed by leaf sheaths, fusiform, 10–50 × 3–10 mm; peridium olive to grey, splits irregularly; spore mass black, semi-agglutinated. Infected plants stunted and sterile.

Spores globose, subglobose to broadly ellipsoidal, 7–12 × 7–11 µm, reddish brown; wall 2.0–3.0 µm thick, densely verrucose.

Comments: Spores seen to form in chains within the ramified sporogenous hyphae on the inner surface of the peridium (Vanky and Shivas, 2008).

Host family: Poaceae
Host species: Triodia basedowii Pritz.
Triodia bitextura Lazarides
Triodia burbidgeana S.W.L.Jacobs
Triodia epactia S.W.L.Jacobs
Triodia irritans R.Br.
Triodia melvillei (C.E.Hubb.) Lazarides
Triodia microstachya R.Br.
Triodia mitchellii Benth.
Triodia pungens R.Br.
Triodia salina Lazarides
Triodia schinzii (Henrard) Lazarides
Triodia stenostachya Domin


States & Territories: NSW, NT, QLD, WA


Reports by McAlpine (1910) and Langdon (1948) of U. hieronymi J.Schröt. (type on Bouteloua ciliata Grieseb., Argentina) on Triodia mitchellii and T. pungens from Queensland were based on misidentifications of T. altilis.