Moreaua rodwayi (McAlpine) Vánky

Synonyms

Thecaphora rodwayi (McAlpine) Thirum. & Neerg.
Tolyposporium rodwayi McAlpine

Description

Sori in the spikelets completely hidden by the floral envelopes, forming a black granular-powdery mass of spore balls around the inner floral organs. Infection systemic; all spikelets of an inflorescence affected and becoming slightly swollen.

Spore balls subglobose, ovoid, elongate or irregular, 35–100 (–110) × 30–60 µm, reddish to blackish brown, composed of 20–100 (or more?), radially arranged firmly agglutinated spores.

Spores subpyramidal or irregular, flattened on the contact sides, in surface view irregularly polyangular, 8–17 × 5–12 µm, in optical median view subcuneiform, 8–25 µm long, reddish to chestnut-brown; wall of the free surface 2–3 µm thick, irregularly verruculose, with a pale rounded germ pore 3.0–3.5 µm diam.; wall of contact sides c. 0.5 µm thick, smooth.

Hosts
   
Host family: Cyperaceae
   
Host species: Lepidosperma effusum Benth.
Lepidosperma filiforme Labill
Lepidosperma gladiatum Labill.
Lepidosperma gunnii Boeck.
Lepidosperma laterale R.Br.
Lepidosperma neesii Kunth
Lepidosperma quadrangulatum A.A.Ham.
Lepidosperma squamatum Labill.
Lepidosperma viscidum R.Br.
Lepidosperma sp.

Distribution

States & Territories: NSW, QLD, TAS, VIC, WA