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Puccinia horiana Henn.

Description
Telia on lower leaf surface, circular, 0.5‒2.0 mm diam., pale yellow to white blisters form on corresponding upper surface, subepidermal, erumpent, pulvinate, grey to yellow or yellowish brown.

Teliospores cylindrical or clavate, apex rounded, 2-celled, slightly constricted at the septum, subhyaline, 38‒58 × 11‒15 µm; wall 1.0‒1.5 µm thick, 4‒9 µm thick at apex, smooth; pedicel persistent, cylindrical, subhyaline, wall 1.0‒1.5 µm thick.

Hosts
Host family: Asteraceae
Host species: Chrysanthemum morifolium

Distribution
ACT, NSW, NT, QLD, SA, TAS, VIC, WA