ON LILIACEA 121 
running from apex to base, evenly coloured, brown, 18—82 x 
14—22 w; epispore uniformly thin, about 14 thick; pedicels 
hyaline, often deciduous, as long as or longer than the spore. 
On leaves of Endymion non-scriptum (Scilla nutans), and 
also of Scilla bifolia, S. campanulata. Common. April—June. 
(Fig. 72.) 
The yellow spots and the concentric arrangement of the sori are often 
very marked. The mycelium is purely local. A few finely echinulate 
uredospores, 27x 20 p, were found by Juel in the young sori on Seilla 
obtusifolia (Bull. Soc. Myce. Fr. xvii, 259). 
DISTRIBUTION: Central and Southern Europe and Morocco. 
33. Uromyces ambiguus Lév. 
Oredo ambigua DC. Flor. fr. vi. 64. 
U. Alliorum Cooke, Handb. p. 528; Micr. Fung. p. 217 p.p. 
Puccinia nuxta Fckl., forma simplicior Korn. 
Uromyces Alliorum DC. ; Cooke, Handb. p. 518 ; Micr. Fung. p. 212. 
Plowr. Ured. p. 137 p.p. 
U. ambiguus Lévy. Ann. Sci. Nat. 3, viii. 375. Sacc. Syll. vii. 543. 
Sydow, Monogr. ii. 262. Grove, Journ. Bot. 1911, p. 367. 
Uredospores, Sori amphigenous, without spots, scattered, 
roundish or oblong, long 
covered by the epidermis, 
yellowish; spores globose to 
obovate, delicately verruculose, 
pale-yellowish, 20—28 x 17— Roy 
22 4; epispore 3—34 w thick, 
with six or seven germ-pores. Fig. 73. U. ambiguus. Teleutospores 
Teleutospores. Sori am- and uredospore on Allium Scorodo- 
phigenousand onthestems,on = ?”™*""" 
the leaves scattered, small and roundish, on the stems confluent 
and larger, up to 15 mm. long, always covered by the blue-grey 
epidermis; spores subglobose to pyriform, rounded above, 
without a papilla and scarcely thickened, rounded or narrowed 
below, smooth, brown, 20—35 x 17—24 w; pedicels thin, hyaline, 
fragile, as much as 30 pw long. 
