134 British Uredinee and Ustilaginea. 
BIOLOGY.—1 have no acquaintance with this as a British species, 
and the host-plant of its zecidiospores is not native in this country. Its 
life-history was worked out by Schréter, who states that the teleuto- 
spores occur on Vicia cracca, Pisum sativum, Lathyrus pratensis and 
sylvestris. “He further finds that another acidium on £. cyparissias 
produces another Uromyces—U. striatus, with brown teleutospores ; 
which, when recent, are delicately striate with wavy lines, and which 
have a flat conchiform brown cap over the germ-pore. The latter 
occurs on Lotus corniculatus, Trifolium arvense, Medicago sativa, etc. 
II]. BRACHYUROMYCES.  Schrot. 
Having spermogonia, uredospores, and teleutospores. 
III]. HEMIUROMYCES. Schrot. 
Having only uredospores and teleutospores, which occur on the same host- 
plant. 
Uromyces scutellatus. (Schrank.) 
Uredospores—Sori small, roundish, at first covered by the epi- 
dermis. Spores scanty, mixed with the teleutospores, roundish 
or subpyriform, with a thick colourless or yellowish-brown 
spore-membrane, smooth, verrucose or finely echinulate, 20- 
35 X 15-25ph. 
Teleutospores—Irregular, rounded, ovate, or oblong, apices of the 
spores often surmounted with a broad, flat, pale or colourless 
papilla. Spores brown, smooth, tuberculate or reticulate, 
20-40 X 15-25. Vedicels rather long, deciduous. 
Synonyms. 
Lycoperdon scutellatum, Schrank. “ Baiersch Flor.,” vol. ii. 
p. 631. 
Uredo excavata, D.C. “Synop. Plant.,” p. 47. 
Uromyces scutellatus, Lév. Cooke, ‘“ Grevillea,” vol. vii. p. 137, 
in part. 
Uromyces excavatus, D. C. Cooke, ‘Grevillea,” vol. vii. 
p. 138; “Micro. Fungi,” 4th edit., p. 213. 
Oromyces scutellatus (Schrank). Winter in Rabh., “Crypt. 
Flor.,” vol. i. p. 144. 
On various Euphorbize (?). 
