132 
MILDEWS, RUSTS AND SMUTS 
Rihes nigrum, and red currant— Rihes rubrum. Britain, 
Europe generally, and N. America. 
Puecinia pringsheimiana, Klebahn. 
Aecidia. On somewhat thickened, concave spots, yellow 
below, where the cups are situated, reddish above, more or 
less circular, sometimes also occurring on the fruit, shortly 
cylindrical, edge white, torn ; spores angularly globose, 
minutely echinulate, yellow, 15—25 p diam. 
Teleutospores. Sori forming elongated lines on the leaves 
and culm, powdery, blackish ; spores oblong club-shaped 
or oblong, tip much thickened, rounded or truncate, base 
often narrowed, smooth, 35^—-50 x 15—20 p, pedicel 
rigid, persistent. 
Aecidia on leaves and fruit of gooseberry— Rihes gros- 
siilaria. 
Teleutospores on Carex acuta. 
Syn. Aecidium grosstdariae, D.C.; Plowr., Ured., p. 
263 (both in part). 
RANUNCULACEAS 
ANEMONE 
Puecinia fusca, Winter. 
Teleutospores. Sori usually scattered over the entire 
under surface of the leaf, or here and there in groups, 
rarely on the upper surface of the leaf, circular or elliptical, 
soon naked and powdery, dusky brown ; spores strongly 
constricted at the septum, cells subglobose or elliptical, 
lower one sometimes ovate or club-shaped, coarsely warted, 
brown, 40—-60 X 20—30 p, pedicel colourless, up to 50 p 
long. Mesospores are sometimes mixed with the teleuto¬ 
spores, 30—45 X 18—25 p. 
On Anemone nemorosa. Britain, Europe generally, 
Siberia, and N. America. 
The mycelium is perennial in the rootstock of the host- 
plant. 
CALTHA 
Puecinia calthae, Link.; Plowr., Ured., p. 145. 
Pycnidia. Arranged in small clusters, honey-colour. 
Aecidia. On the under surface of the leaf, in small 
groups on yellowish circular spots, also forming long 
clusters on the leafstalks, cup-shaped, edge recurved, 
whitish, torn ; spores angularly globose, minutely warted, 
orange, 21—28 p diam. 
Uredospores. Sori minute, scattered, circular, powdery, 
