76 
MILDEWS, RUSTS AND SMUTS 
Syn. Uromyces phaseoli, Wint., Plowr., Ured., p, 122. 
Uromyces phaseolorum, De Bary. 
On leaves of Phaseohts vulgaris (“ Scarlet-runner ”). 
Plowright does not appear to have met with this species, 
it is, however, certainly British, as it has been sent to 
Kew on several occasions for determination from various 
parts of the country. 
Uromyces striatus, Schroet. 
Pycnidia. Numerous, mixed with the aecidia. 
Aecidia. Scattered over the under surface of the leaf, 
edge broadly revolute, torn, white; spores angularly- 
globose or elliptical, minutely warted, orange, 18-—23 p. 
Uredospores. On both surfaces of the leaf, not forming 
spots, scattered, sometimes in groups and encroaching on 
each other, minute, powdery, cinnamon ; spores subglobosc 
or elliptical, sparingly echinulate, brownish, 15^—22 p 
diam., with 2—3 germ-pores, epispore 1.5—2 p thick. 
Teleutospores. Sori similar to those of the uredospore, 
dusky brown ; spores globose, subglobose or ovate, tip 
with a minute papilla, more or less distinctly longitudinally 
striate, pale brown, 18—24 X 15—20 p, pericel short, 
colourless, deciduous. 
Aecidia on leaves of Euphorbia cyparissias ; uredo- and 
teleutospores on Medicago falcata, M. lupulina, M. falcata, 
Trifolium minor, T. arvensis, T. procumhens (=agrarium). 
Recorded from Jersey, Europe, N. and S. America, India. 
Uromyces trifolii, Lev., Plowr., Ured., p. 124 (in part). 
Pycnidia and aecidia absent. 
Uredospores. Sori on the under surface of the leaves 
or on the petioles, scattered, or here and there clustered, 
minute, larger when running into each other, soon naked 
and powdery, pale brown ; spores globose, subglobose, 
ovate or elliptical, sparingly echinulate, pale brown, 18— 
26 X 17—24 p, germ-pores, 5—7. 
Teleutospores. Sori on the under surface of the leaf 
or on the petioles, scattered, or here and there clustered, 
minute, or larger when running into each other, at first 
covered by the epidermis, which soon splits, then powdery, 
dusky brown ; spores subglobose, globose, elliptical or 
ovate, tip rounded, with a very small papilla, smooth, or 
sometimes very minutely warted, or with an indication 
of more or less parallel lines, brown, 18—30 x 16—25 
pedicel colourless, short, deciduous. 
