Macalpinomyces mackinlayi McTaggart & R.G. Shivas

Description

Sori in some ovaries of an inflorescence, hypertrophied, long cylindrical, sometimes twisted, 10–35 × 1.0–1.5 mm wide, initially green becoming grey from the apex downwards, with reddish brown remnants about 2 mm long of the host pericarp at the apex, rupture longitudinally exposing the powdery spore mass mixed with sterile cells.

Spores globose, subglobose or broadly ellipsoidal, 9–13 × 8–12 µm, yellowish brown; wall even, densely covered in conical spines 1– 2 µm high.

Sterile cells in large, loose, irregular groups; individual cells globose, subglobose, ellipsoidal or slightly irregular, 5.5–10.0 × 4.5–8.0 µm, hyaline; wall even, c. 0.3 µm thick, smooth.

Hosts
   
Host family: Poaceae
   
Host species: Eulalia mackinlayi (Benth.) Kuntze

Distribution

States & Territories: NT, WA