Moreaua laevigata (Websdane & Vánky) Vánky

Synonyms

Tolyposporium laevigatum Websdane & Vánky

Description

Sori in the flowers completely hidden by the floral envelopes, the black initially agglutinated, later granular-powdery mass of spore balls covering the surface of the inner aborted floral organs.

Spore balls globose, subglobose, ovoid or ellipsoidal, 50–85 × 45–60 µm, blackish brown, opaque, composed of many (40–100 or more) firmly cohering spores.

Spores in median view subcuneiform, elongate or irregular, 12–25 µm long, in surface view the free surface of the spores irregularly polygonal, (5–) 8.0–13.5 × (3–) 5–11 µm, dark reddish to blackish brown; wall of the free surface slightly convex, 2.5–5.0 µm thick, with irregular often confluent low warts; wall of contact sides c. 0.5 µm thick, smooth.

Hosts
   
Host family: Cyperaceae
   
Host species: Schoenus laevigatus W.Fitzg.

Distribution

States & Territories: WA