=Trichobasis Rhamni=, Cooke. BUCKTHORN RUST; seated on definite yellowish spots; sori occurring only on the under surface of the leaves, scattered or collected in clusters, very minute, roundish, or oblong; spores at length rusty brown, subglobose.—On _Rhamnus catharticus_. Selsdon, Surrey. September 16, 1864. (_A. Grugeon._) UROMYCES, _Lév._ _Spores_ unilocular, attached permanently to a decided peduncle of greater or less length.—_Berk. Outl._, p. 333. =Uromyces Alliorum=, DC. GARLIC RUST; spots obliterated, sori linear, oblong, or oval, amphigenous; spores subglobose, yellow.—On species of _Allium_. =Uromyces Ulmariæ=, Lév. GOLDEN RUST; broad, pulverulent, on the under surface of leaves, nerves, and petioles; spores numerous, subglobose, bright reddish-orange.—On _Spiræa Ulmariæ_, Roses, &c. Common. (Plate VII. figs. 147, 148.) =Uromyces appendiculata=, Lév. LONG-STEMMED RUST; spots yellowish-brown, sori subrotund and oval, confluent, nearly plane, on the under surface. Epidermis bursting, spores ovoid, brown, with a long peduncle.—On _Leguminosæ_ and other plants. August and September. (Plate VII. figs. 149, 150.) =Uromyces apiculosa.=, Lév. SHORT-STEMMED RUST: spots yellow or brown, sori subrotund, scattered, surrounded by the ruptured epidermis; spores ovoid, brown, shortly pedunculate.—On dock and various other plants. August and September. Common. (Plate VII. figs. 154, 155.) =Uromyces Limonii=, Lév. SEA-LAVENDER RUST; epiphyllous, sori bullate, scattered or disposed in rings; spores ovate.—On _Statice limonia_. =Uromyces Ficariæ=, Lév. PILEWORT RUST; spots yellowish, sori scattered, aggregate, confluent, and expanded; epidermis ruptured; spores ovoid, brown.—On _Ranunculus Ficaria_. May and June. Common. (Plate VII. figs. 156, 157.) =Uromyces Primulæ=, Lév. PRIMROSE RUST; spots yellowish, sori subrotund and oval, aggregate, on the under surface; epidermis at length bursting; spores ovoid, brown.—On Primroses. =Uromyces intrusa=, Lév. LADY’S-MANTLE RUST; on the under surface, scattered, or partially aggregate, reddish-brown, rounded, somewhat prominent, minute, very unequal; spores roundish or oval.—On _Alchemilla vulgaris_. =Uromyces Iridis=, Lév. IRIS RUST; on the under, rarely on the upper, surface; spots yellow, sori small, pale red-brown, oblong and linear, scattered or aggregate, scarcely convex; epidermis bullate, rarely bursting longitudinally; spores globose or broadly elliptic, pale brown, pellucid.—On _Iris fœtidissima_. August to September. Not uncommon. POLYCYSTIS, _Lév._ _Spores_ irregular, consisting of several cells.—_Berk. Outl._, p. 334. =Polycystis Colchici=, Tul. MEADOW-SAFFRON SMUT; sori elongated, bursting irregularly; spores smooth or slightly papillose.—On leaves of Meadow-Saffron. Not common.