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Puccinia cynodontis Lacroix ex Desm.

Description
Uredinia on both leaf surfaces, subepidermal, erumpent, linear, up to 1 mm long, yellowish brown.

Urediniospores globose or subglobose, yellowish brown or reddish brown, 21‒27 × 21‒24 µm; wall 2‒3 µm thick, minutely and densely verruculose, appearing smooth in profile under LM, with 2‒3 equatorial germ pores.

Telia on both leaf surfaces, subepidermal, erumpent, pulvinate, black.

Teliospores ellipsoidal, apex acuminate or rounded, reddish brown, 28‒44 × 16‒22 µm; wall 2‒3 µm thick at sides, 4‒10 µm thick at apex, smooth, 2-celled; pedicel persistent, subhyaline to pale yellow.

Hosts
Host family: Poaceae
Host species: Brachyachne convergens
Cynodon dactylon
Cynodon nlemfuensis

Distribution
ACT, NSW, QLD, SA, VIC

Comments
Puccinia cynodontis was regarded by McAlpine (1906) as indigenous to Australia. This rust fungus is widespread in Australia and occasionally severe on couch grass grown as turf.