have come to hand, and as in all uredospores are wanting, the species is considered to be different, an opinion confirmed by examination of specimens of H. acutissima collected in Java, and forwarded by Dr. J. C. Arthur. The pedicels of the spores especially are quite different, those of H. acutissima being thickened basally, whereas in H. australis they taper to a fine point. 2. Phragmidium acuminatum n. sp. Fig. 2. O.I. unknown. 11. Uredosori hypophyllous, scattered, orbicular, 0.5-2 mm. diameter, pulverulent, orange, encircled by a layer of cylindrical, or clavate, stout, thin walled, hyaline, incurved paraphyses. Uredospores subglobose or obovate, 18-26 × 15-20 microns, average 19 × 16 microns; epispore hyaline, finely and closely echinulate, 1.5 microns thick; germ pores 6-8, scattered. Fig. 1.—Hamaspora australis on Rubus australis; teleutospores, proximal end of one pedicel shown, × 340. On the right is a spore (X 80) showing the extraordinary length of the pedicel. Fig. 2.—Phragmidium acuminatum on Acaena Sanguisorbae var. sericeinitens; uredospores and teleutospores, × 340. III. Teleutosori amphigenous, chiefly hypophyllous, scattered or confluent, orbicular, 0.25-3 mm. diameter, pulvinate, compact, shining black, naked, with numerous spores in each sorus. Spores 1-5 celled, commonly 4, cylindrical, 55-95 × 18-25 microns, average 67 × 20 microns; apex acuminate, drawn into a long coloured papilla, continuous