ON LILIACEE 119 
interrupted and anastomosing, brown, 283—44 x 22—30 p; epl- 
spore 2—3} w thick; pedicels hyaline, slender, deciduous. 
Fig. 70. U. Lilii. a, leaf of Lilium candidum, with ecidia; b, another, with 
teleuto-sori, nat. size; c, cells of peridium, in section and inner face-view ; 
d, teleutospores ; ¢, teleutospore seen from above ; f, ecidiospore, all x 600, 
On Liliwn candidum. Kew Gardens; also at Birmingham, 
1911-3 (C. W. Lowe). Aicidia in April, May; mature teleuto- 
spores from June. (Fig. 70.) 
The part of the leaf occupied by the ecidia is somewhat thickened, 
and the ecidia scarcely protrude above the epidermis. The peridia are 
slow in opening. The streaked teleutospores are very distinctive. The 
lilies on which the parasite appeared at Birmingham had been in the 
garden for some years, but it was not noticed till 1911. Fischer records 
it on Fritillaria Meleagris, and Sydow and Arthur on other species of the 
two genera. The true U. Hrythronii differs from this species in possessing 
a truly cup-shaped ecidium with a distinctly revolute margin. But the 
teleutospores of the Birmingham specimens were more like those figured 
by Fischer under U. Erythronii than those which he figures on Fritillaria 
Meleagris (f. 5), though devoid of the “ Queranastomosen.” Possibly the 
species on Lilium is quite distinct from that on Fritillaria. The longitu- 
dinal strize are so plainly marked as to be visible under a comparatively 
low power. As Fischer remarks, the cells of the lower part of the peridium 
are much thinner-walled than those in the upper part. 
DISTRIBUTION : Central Europe, North America. 
