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Puccinia cyperi Arthur

Description
Uredinia on lower leaf surface, subepidermal, erumpent, linear, reddish brown.

Urediniospores globose or subglobose, apex obtuse, subhyaline to yellow, 19‒23 × 18‒20 µm; wall 2‒3 µm thick, finely echinulate, with 2‒3 scattered germ pores.

Telia on lower leaf surface, subepidermal, dome-shaped, black.

Teliospores clavate, apex acuminate or rounded, 2 celled, yellowish brown to reddish brown, 44‒57 × 17‒20 µm; wall 1‒2 µm thick at sides, 4‒7 µm thick at apex, smooth, with persistent pedicel up to 44 µm.

Hosts
Host family: Cyperaceae
Host species: Cyperus iria
Cyperus rotundus

Distribution
QLD

Comments
Puccinia cyperi was reported from Australia by McAlpine (1906). Several other species of Puccinia are described on Cyperus from around the world, including P. canaliculata, P. cyperi-tagetiformis and P. philippinensis. These taxa are distinguished by the shape, size and number of germ pores on the urediniospores (Kern 1919). Preliminary sequence data indicates that there are two species of Puccinia on Cyperus spp. in Australia (unpublished).

Highslide JS
Puccinia cyperi on Cyperus iria - BRIP 60997.
Highslide JS
Puccinia cyperi on Cyperus rotundus - BRIP 52662.
Scale bar = 1 cm.
Highslide JS
Urediniospores of Puccinia cyperi on Cyperus rotundus - BRIP 52662.
Scale bar = 10 µm.
Highslide JS
Teliospores of Puccinia cyperi on Cyperus rotundus - BRIP 52662.
Scale bar = 10 µm.