Tilletia kimberleyensis Vánky & R.G. Shivas

Description

Sori in swollen ovaries, obovoid with a rounded tip and a narrowing basal part, initially green, brown at maturity, with a rounded or irregular apical or subapical opening due to the thin covering membrane on this part of the sorus.

Spores globose or subglobose, 16–24 (–26) × 16–24 µm, yellowish to dark brown, not opaque; wall 2.5–4.5 µm thick, including the 1.5–3.5 µm high warts that appear in surface view as darker irregular spots, 6–12 per spore diameter.

Sterile cells subglobose, ellipsoidal or slightly irregular, subhyaline.

Hosts
   
Host family: Poaceae
   
Host species: Chionachne cyathopoda (F.Muell.) F.Muell. ex Benth.

Distribution

States & Territories: NT, WA

Comments

Tilletia kimberleyensis is similar to T. chionachnes (q.v.), which also occurs on Chionachne in northern Australia. However, they differ in the shape, dimensions, wall-thickness and colour of the spores.