In the sori one sometimes finds teleutospores with two distinct germpores (figs. 14a, 4, and 5). Liro (1906, p. 15) separated from U. Trifolii the form occurring on Trifolium repens because it would not infect T. hybridum and T. pratense, and gave to it the name of U. Trifolii-repentis. These two forms are maintained as distinct species by Sydow (1910, p. 131) because of the absence of aecidia and the presence of a larger number (3–6) of scattered germ-pores in U. Trifolii. A third form, U. flectens, on T. repens, was in 1909 separated by Lagerheim, as only teleutospores occur in the cycle, these appearing in sori which are larger, appear more frequently on the petioles and veins, and are longer covered by the epidermis. 11. Uromyces Trifolii-repentis Liro. (Fig. 14b.) Liro, Act. Soc. Faun. Flor. Fenn., vol. 29, p. 15, 1906. Uromyces Trifolii Plow., Ured., p. 124, 1889, p.p. Trichobasis fallens Cke., Micr. Fung., p. 226, 1865, p.p. Puccinia fallens Cke., Handbk., p. 508, 1871, p.p. Nigredo Trifolii Arth., N. Am. Fl., vol. 7, p. 255, 1912. O. Spermogones epiphyllous, in minute clusters, immersed, honey-coloured. I. Aecidia hypophyllous and on petioles, in circular or elliptical groups, up to 5 mm. diam., crowded, pallid yellow. Peridia cupulate, margins expanded but not or scarcely revolute, white, laciniate. Spores polygonal, 18–25 × 15–17 mmm.; epispore finely and densely verruculose, 1 mmm. thick, hyaline, cell-contents pale orange. II. Uredosori amphigenous, and on petioles, cinnamon-brown, scattered, or confluent and linear, circular, minute, up to 0·5 mm. diam., bullate, pulverulent, surrounded by the ruptured epidermis. Spores globose, elliptical, or obovate, 17–25 × 16–22 mmm.; epispore sparsely and somewhat coarsely echinulate, 1·5 mmm. thick, golden-brown, with 2–4 (usually 2) equatorial germ-pores on one face. III. Teleutosori amphigenous, on leaves circular, minute, 0·5 mm. diam., on petioles linear, up to 5 mm. long, chocolate-brown, bullate, pulverulent, long covered. Spores globose, elliptical, or obovate, 18–28 × 15–22 mmm.; apex rounded, not or scarcely thickened, base rounded, epispore smooth or with a few scattered and minute warts, 1·5–2 mmm. thick, chestnutbrown; pedicel deciduous, hyaline, commonly subturbinate, short, up to 45 × 6 mmm.; germ-pore apical, or one-third way down side, conspicuous, covered with a prominent hyaline papilla. Host: Trifolium hybridum L. On leaves and petioles. Herb. No. 501. I, II, III. Ruakura (Auckland), A. W. Green! 9 Jan., 1922. Distribution: Australia; North and South America; Europe; Asia. Distinguished by the presence of all three spore-stages, and by the smaller number of germ-pores in the uredospores. 12. Uromyces Discariae n. sp. (Text-fig. 15, and Plate 77, fig. 1.) Rhamnaceae (6). Aecidium Discariae Cke., Grev., vol. 14, p. 89, 1886. 0. Spermogones hypophyllous, preceding the aecidia, in confluent groups, sometimes circinnate, minute, immersed, honey-coloured. I. Aecidia hypophyllous, closely aggregated on yellow spots which are visible on the upper surface. Peridia tubular, standing above the leaf-surface 1 mm., bright orange, margins erect, hyaline, dentate.