io6 MILDEWS, RUSTS AND SMUTS 
prenanthis. The present species, however, will not infect 
species of Lactuca, but is confined to Prenanthes. 
SENECIO 
Puccinia expansa, Link. 
Teleutospores. Sori in crowded groups on more or less 
circular, yellowish or brownish large spots, on both sides 
of the leaf, but most abundant on the under surface, 
blackish-brown ; spores ovate or broadly elliptical, ends 
broadly rounded, with a small pale wart at the tip, scarcely 
constricted at the septum, smooth, brown, 30—^40 X 19— 
30 [Ji, pedicel very short. 
On Senecio aquatica. Britain, Austria, Hungary, Swit¬ 
zerland, Holland, and Italy. 
This species is represented in Cooke’s Fung. Brit. I, 
No. 37, and H, No. 236, and in Vize, Fung. Brit., No. 21. 
Puccinia glomerata, Grev. ; Plowr., Ured. p. 209. 
Teleuto spores. Sori crowded, or in rings on rather 
large, brownish spots on both surfaces of the leaf, for a long 
time covered by the epidermis, then becoming powdery, 
brown ; spores oblong or ovate-oblong, with a very minute 
pale wart at the tip, base rounded or slightly narrowed, 
scarcely constricted at the septum, smooth, pale brown, 
30—^45 X 16—24 [X, pedicel very short. 
On living leaves of ragwort— 5 ^ jacohaea. Britain 
and Belgium. 
Distinguished from P. expansa by the pale brown, 
oblong teleutospore, with a very minute pale wart at the tip, 
and by the host-plant, ragwort, to which it is confined. 
Puccinia senecionis, Lib.; Plowr., Ured., p. 209. 
Aecidia. On yellowish or brownish spots on the under 
surface of the leaf, solitary or in small clusters, flat, whitish, 
edge irregularly torn ; spores angularly globose, tinged 
yellow, punctate, 15—20 p, diam. 
Teleuto spores. Sori minute, in small groups covered by 
the epidermis, which becomes perforated at the centre, 
then powdery, dusky brown, on the under surface of the leaf; 
spores ovate or broadly elliptical, ends rounded, tip not 
thickened, often with a small, pale wart, very slightly 
or not at all constricted at the septum, smooth, brown, 24—■ 
30 X 18—21 p, pedicel very short, or practically absent. 
On Senecio aquatica. Britain, Germany, Austria, Swit¬ 
zerland, France. 
