Cintractia limitata G.P. Clinton

Synonyms

Cintractia axicola var. minor G.P. Clinton
Cintractia chacoensis Hirschh.
Cintractia congensis Henn.
Cintractia cyperi-polystachyi Henn.
Cintractia distans Mundk. (as "disvans")
Cintractia limitata var. congoensis Zambett.
Cintractia minor (G.P. Clinton) H.S. Jacks.
Cintractia tangensis Henn.
Cintractia togoensis Henn.
Ustilago mariscana Zundel

Description

Sori surrounding the base of floral peduncles, pedicels, axes of spikelets, individual flowers or groups of flowers, spherical, ovoid or fusiform, from 1 mm long in the flowers to 10–15 mm long on the floral peduncles, when young covered by a whitish brown fungal peridium that flakes away exposing the blackish brown agglutinated mass of spores with a powdery surface.

Spores globose, subglobose, ellipsoidal to slightly irregular, 9.5–14.0 × 9–12 µm, laterally flattened (7–9 µm wide), medium dark yellowish brown; wall ±uniformly thick, 0.7–1.0 µm, apparently smooth to very finely punctate, in SEM finely densely verruculose.

Spore germination (on water agar, after 1–2 days, at room temperature, from Kyllinga polymorpha, HUV 17120) resulting in 4-celled basidia 20–30 × 5–6 µm. Basidiospores and ramifying hyphae produced on the basidia and large dikaryotic conidia after conjugation of 2 basidial cells.

Hosts
   
Host family: Cyperaceae
   
Host species: Cyperus bifax C.B.Clarke
Cyperus compressus L.
Cyperus distans L.f.
Cyperus iria L.
Cyperus rotundus L.
Cyperus victoriensis C.B.Clarke

Distribution

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