78 
MILDEWS, RUSTS AND SMUTS 
with the teleutospores, broadly elliptical, minutely spinu- 
lose, yellowish brown, 20—35 x 15—25 p, generally 4 
germ-pores. 
Teleutospores. Sori on the upper, rarely the under sur¬ 
face of the leaf, generally flat, dusky brown, bordered by 
the epidermis ; spores variable in form and size, elliptical, 
globose or oblong, usually with a flattish papilla at the tip, 
brown, coarsely warted, warts often running into each 
other in rows, or elongated and smaller warted, 15—^40 
X 15—27 p, pedicel slender, deciduous. 
vSyn. Uromyces excavatus, Cooke (not of D.C.). 
Parasitic on leaves of Euphorbia esula and other species. 
The m3^cclium of the teleutospore stage permeates the 
entire plant, causing much distortion and dwarfing. 
GERANIACEAE 
Uromyces geranii, Otth. and Wartm., Plowr., Ured., 
p. 126. 
Pycnidia. Scattered among the aecidia, orange. 
Aecidia. On the under surface of the leaf, or on petioles, 
causing distortion, hemispherical and closed, then with a 
pore at the tip, finally with the edge slightly recurved, 
3^ellow ; spores ovate, minutely warted, yellow, 20—30 
X 15—24 p. 
Uredospores. Sori on the under surface of the leaf, 
on brownish spots, minute, scattered or in groups here and 
there, powdery, cinnamon ; spores subglobose or elliptical, 
brown, sparingly echinulate, 20—^30 X 17—24 p, epispore 
rather thick, i—2 germ-pores. 
Teleutospores. Sori similar to those of the uredo stage 
in form and arrangement, dusky brown ; spores subglobose 
or pear-shaped, with a long, pale papilla or wart at the tip, 
smooth, brown, 20—35 X 17—25 p, pedicel short, colour¬ 
less, deciduous. 
S3m. Trichobasis geranii, Berk. 
On Geranium sylvaticum, G. pratense, G. molle, G. dissectum, 
G. sanguineum, G. rotundifolium. 
The aecidiospores often distort the stem of the host-plant. 
ROSACEAE 
Uromyces alchemillae, Lev., Plowr., Ured., p. 137. 
Uredospores. Sori on the under surface of the leaf, 
often covering the entire surface, often arranged radially, 
powdery, yellow or orange ; spores globose or elliptical, 
minutely echinulate, yellow, 15^—25 x 14—^^21 p. 
