Host: Hypericton gramineum Forst. f. On leaves. Herb. No. 279. II. Alexandra (Otago), 600 m., G. H. C. 10 Dec., 1919

0. Unknown.
II. Uredosori amphigenous, chiefly hypophyllous, scattered, pulverulent, elliptical, 0.2-0.5 mm. long, reddish-orange when fresh, yellowing with age, surrounded by the ruptured epidermis mixed with numerous hyaline capitate paraphyses. Spores subglobose or elliptical, 17-24 X 12-17 mmm.; epispore hyaline, closely and coarsely verruculose, 1.5-2 mmm. thick; germ-pores scattered, 3-4, obscure.
III. Teleutosori hypophyllous, scattered or aggregated in small irregular groups, subepidermal, minute, 0.3-0.5 mm. diam., at first chestnut-brown, becoming black. Spores prismatic, 22-32 X 6-12 mm.; apex rounded or truncate, slightly (2-3 mmm.) thickened; epispore smooth, yellowish, 1 mm. thick: germ-pore apical, obscure.

Distribution: Japan; Australia.

The host is indigenous, and is fairly widely distributed; it occurs also in Australia, Tasmania, and New Caledonia. (Cheeseman, 1906, p. 74.) Only the uredospores have been. collected in New Zealand, but both stages have been recorded from Australia by McAlpine (1906, p. 191) as M. Hypericorum Schroet.
Sydow has suggested (Mon. Ured., vol. 3, p. 386, 1912) that Aecidium disseminatum Berk. is probably the uredo stage of this species; but McAlpine (1906, p. 200) had specimens of an Aecidium on Hypericum japonicum compared with the type of Aec. disseininatum at Kew, when they were found to be identical.

The host is an indigenous species occurring in Tasmania, Australia, and New Caledonia. In New Zealand this species has been collected only from Central Otago; it is also recorded from Japan and Australia