Moreaua peckii Vánky & R.G. Shivas

Description

Sori on the surface of inner floral organs forming a black, first agglutinated, later granular powdery mass of spore balls, completely hidden by the outermost floral envelopes.

Spore balls globose, subglobose, ovoid, ellipsoidal, elongate to slightly irregular, variable in size, 50-100(-120) x 40-80 µm, reddish brown to sub-opaque, composed of dozens of spores which separate rather easily under pressure.

Spores in surface view rounded or elongate, subpolyangularly irregular, 8-16 × 7-11 µm, in optical median view subcuneiform, rarely cuneiform, elongate or slightly irregular, 16-28(-32) µm long, yellowish or olivaceous brown; wall uneven, on the free surface 4-9 µm thick, finely verruculose and covered by irregular squamae that detach under pressure, on the contact sides 0.5 µm thick, smooth, wall of the central, narrow end of the spores 0.5-4 µm thick, smooth.

Hosts
   
Host family: Cyperaceae
   
Host species: Schoenus cruentus (Nees) Benth.

Distribution

States & Territories: WA