THE RUSTS ON FRITILLARIA 
373 
III. Telia amphigenous, caulicolous, petiolicolous, numerous, 
scattered, elliptical, rather small, 0.1-0.8 mm. in length, tardily 
naked, dehiscent by longitudinal slits in the epidermis, somewhat 
pulverulent, chestnut-brown, ruptured epidermis conspicuous; telio- 
spores broadly ellipsoid to obovoid, 23-31 by 31-42 fx; wall golden- to 
cinnamon-brown, 1.5-2 ju thick, low (1.5-3 m) hyaline apiculus at apex, 
rather delicately rugose in longitudinal striations; pedicel hyaline, 
short, fragile. 
On Liliaceae: Fritillaria Meleagris L. in Europe. 
Type locality: Southern Europe, on Fritillaria Meleagris. 
ExsiccATi: Sydow Ured. 107; Thiim. Myc. Univ. 55J, 728; Roum. 
Fungi Gall. 2Q22. 
This species differs in many respects from Uromyces aecidiiformis 
with which it has been included by European authors. The telio- 
spores (Fig. 3) are larger, thinner walled and less prominently rugose 
than those on Lilium. 
Grateful acknowledgment is due Dr. J. C. Arthur for the unre- 
stricted use of his herbarium material upon which this study is based ; 
to Professor H. S. Jackson, for his many helpful suggestions, the 
writer is also deeply indebted. 
Purdue University, 
Agricultural Experiment Station, 
West Lafayette, Indiana 
