Thecaphora lagenophorae (McAlpine) McAlpine

Synonyms

Ustilago lagenophorae McAlpine

Description

Sori in the flower heads, restricted to the flowers, swollen, ovoid, inconspicuous, c. 2 mm long and 1.5 mm wide, filled with a pale brown powdery mass of spore balls and spores.

Spore balls subglobose to ellipsoidal or slightly irregular, 22–40 × 20–30 µm, pale yellowish brown, composed of 2–10 spores that readily separate.

Spores subglobose, ovoid, ellipsoidal, usually subpolyhedrally irregular, often with 1 or 2 flattened contact sides, 16–24 × 13–18 µm, pale yellowish brown; wall 0.5–0.8 µm thick on the contact sides, finely and sparsely foveolate in SEM, 1.0–1.5 (–2) µm thick on the free irregularly verrucose surface.

Hosts
   
Host family: Asteraceae
   
Host species: Solenogyne gunnii (Hook.f.) Cabrera

Distribution

States & Territories: TAS