Restiosporium anarthriae Vánky

Description

Sori in all capsules of an inflorescence, swollen, hidden by the floral envelopes, filled with a dark brown semi-agglutinated to powdery mass of spore balls.

Spore balls subglobose, ovoid, ellipsoidal, elongate or irregular, 40–80 × 30–60 µm, olivaceous brown, composed of a few tens of readily separating spores.

Spores globose, ovoid, ellipsoidal, elongate to usually subpolyhedrally irregular, (8–) 9–17 (–18.5) × (6.5–) 7–11 µm, pale olivaceous brown; wall uniformly 0.5–1.0 µm thick, smooth; in SEM free surface irregularly low-verruculose.

Hosts
   
Host family: Anarthriaceae
   
Host species: Anarthria laevis R.Br.

Distribution

States & Territories: WA