Restiosporium leptocarpi (Berk.) Vánky

Synonyms

Thecaphora leptocarpi Berk.

Description

Sori in all nuts of an inflorescence, hidden by the floral envelopes, filled with a black initially agglutinated, later granular-powdery mass of spore balls.

Spore balls subglobose, ellipsoidal or slightly irregular, 40–90 × 35–70 µm, dark olivaceous brown to opaque, composed of tens of spores that separate readily by pressure.

Spores subglobose, ellipsoidal, elongate to subpolyhedrally irregular, 16–25 (–27) × 11–19 µm, medium dark olivaceous brown; wall uniformly 1.0–1.5 µm thick, finely and densely low-verrucose; spore profile finely wavy.

Hosts
   
Host family: Restionaceae
   
Host species: Leptocarpus elegans B.G.Briggs & L.A.S.Johnson
Leptocarpus tenax (Labill.) R.Br.

Distribution

States & Territories: VIC, WA

Comments

Restiosporium leptocarpi has comparatively large verrucose spores. While the foregoing description is based on the type specimen, some specimens have smaller spores (13–24 µm long).