ON LILIACE.E 



119 



interrupted and anastomosing, brown, 28 — 44 x 22 — 30 jjl ; epi- 

 spore 2 — 3| /i thick ; pedicels hyaline, slender, deciduous. 



Fig. 70. U. Lilii. a, leaf of Lilium candidum, with secidia ; b, another, with 

 teleuto-sori, nat. size ; c, cells of peridium, in section and inner face-view ; 

 d, teleutospores ; e, teleutospore seen from above ; /, secidiospore, all x 600. 



On Lilium candidum. Kew Gardens; also at Birmingham, 

 1911-3 (C. W. Lowe). /Ecidia in April, May; mature teleuto- 

 spores from June. (Fig. 70.) 



The part of the leaf occupied by the secidia is somewhat thickened, 

 and the eecidia 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. Erythronii differs from this species in possessing 

 a truly cup-shaped secidium 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 strise 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. 



