Moreaua gigaglomerulosa Vánky

Description

Sori as in other Moreaua species on Lepidosperma, on the surface of inner floral organs, forming a black initially agglutinated, later granular-powdery mass of spore balls, completely hidden by the floral envelopes.

Spore balls ±irregular, elongate, more rarely subglobose or ellipsoidal, sometimes 2 or 3 balls confluent, 60–220 × (50–) 60–140 µm, dark reddish brown, not opaque, composed of tens to hundreds of firmly cohering spores.

Spores subcuneiform, radially elongate, in surface view polyangular-irregular, 7–13 × 5–10 µm, in optical median view 13–32 (–36) µm long, yellowish brown; wall of the free surface 1.5–3.0 µm thick, moderately densely and irregularly verruculose except for a paler rounded 2.5–3.0 µm wide germ pore; wall of the contact sides thinner, c. 0.5 µm, smooth.

Hosts
   
Host family: Cyperaceae
   
Host species: Lepidosperma neesii Kunth

Distribution

States & Territories: NSW