Triodiomyces lituanus (R.G. Shivas, K. Vánky & J.H. Cunnington) McTaggart & R.G. Shivas

Synonyms

Ustilago lituanus R.G. Shivas, K. Vánky & J.H. Cunnington

Description

Sori surrounding the floral stems, completely destroying the inflorescence, long-cylindrical, curved like a shepherd’s crook, 40–170 mm long, 1.0–2.0 (–2.5) mm wide, occasionally bearing remnants of small deformed glumes on their distal part, initially covered by the epidermis as a thin greyish peridium that ruptures irregularly exposing the dark brown semi-agglutinated to powdery mass of spores surrounding a long simple flagelliform columella.

Spores globose, subglobose to broadly ellipsoidal, 6–8 × 5–7 µm, pale olivaceous brown; wall uniformly c. 0.5 µm thick, rather sparsely low-verruculose; spore profile smooth to very finely wavy.

Hosts
   
Host family: Poaceae
   
Host species: Triodia epactia S.W.L.Jacobs

Distribution

States & Territories: WA

Comments

Triodiomyces lituanus is one of five species of Triodiomyces which infect Triodia spp. in Australia. It is most similar to T. triodiae, which also has long cylindrical sori but also larger spores [(8–) 9–12 × 7.0–10.5 µm].