A uteuuromyces. 127 
Uromyces betes. (Pers.) 
At cidiospores—On yellowish rounded or elongated spots. Pseudo- 
peridia irregularly scattered or circinate, cup-shaped, with 
whitish torn edges. Spores polygonal, isodiametric, orange- 
yellow, smooth, 15-25 in diameter. 
Uredospores—Sori brown, irregularly roundish, surrounded by the 
ruptured epidermis, scattered or circinate. Spores ovate or 
elliptical, pale yellowish brown, echinulate, 25-30 X 16-25). 
Teleutospores—Sori black brown. Spores roundish, elliptical, 
ovate or obovate, dark brown, smooth, with a colourless 
papilla on their summits, 25-35 < 20-254. Pedicels long, 
deciduous. 
Synonyms. 
Uromyces bete (Pers.). Winter in Rabh., “Krypt. Fior.,’ 
vol. i. p. 155. 
Uredo bete. Pers., ‘‘Syn.,” p. 220. Berk., “Eng. Flor.,” 
vol. v. p. 377. 
Uromyces bete, Kithn. Cooke, “Grevillea,” vol. vit. p. 136; 
** Micro. Fungi,” 4th edit., p. 213. 
Trichobasis beta, Lév. Cooke, “ Hdbk.,” No. 1587; ‘“ Micro. 
Fungi,” 4th edit., p. 225. 
E-xsiccatt. 
Cooke, i 70; ii. 31; “L. F.,” 39. Vize, “ Micro. Fungi 
Brit.,” 553. 
On Beta vulgaris and maritinia. 
Ecidiospores, April and May; uredospores, June and July ; 
teleutospofes, August to October. 
BIOLOGY.—The zcidiospores are very rarely found in this country 
in a state of nature. In 14885, I produced the zcidia on two plants of 
mangold from the teleutospores from wild plants of Beta maritima 
grown on the banks of the River Ouse at West Lynn. Some dead 
stems of the Beta were laid on the mangold plants on March 20, and 
on April 21 the zcidiospores were found, which in due course were 
followed by the uredospores. The zecidium was found in April, on 
the wild Beta maritima. 
