Tranzscheliella minima (Arthur) Vánky

Synonyms

Sorosporium reverdattoanum Lavrov
Sphacelotheca valesiaca Schellenb.
Ustilago minima Arthur
Ustilago stipae Cif.

Description

Sori as as in T. hypodytes, surrounding upper internodes, but initially covered by a ±conspicuous silvery to whitish fungal peridium that splits irregularly and flakes away to expose the brownish black powdery spore mass. Infection systemic; inflorescence usually aborted.

Spores globose, subglobose to ovoid, 4–5 (–6) × 3.5–4.5 (–5) µm, medium to dark olivaceous brown, smooth, without polar thickenings.

Hosts
   
Host family: Poaceae
   
Host species: Austrostipa verticillata (Nees ex Spreng.) S.W.L.Jacobs & J.Everett

Distribution

States & Territories: NSW