130 
MILDEWS, RUSTS AND SMUTS 
UMBILICUS 
Puccinia umbilici, Guep.; Plowr., Ured., p. 204. 
Teleutospores. Sori usually crowded on large more or 
less circular, pale or reddish spots, often in irregular circles, 
convex, compact, then powdery, reddish-brown, mostly 
on the leaves, sometimes on the leafstalks ; spores broadly 
elliptical, ends rounded, tip not thickened, but often with 
a minute, pale point, scarcely constricted at the septum, 
smooth, clear brown, 28—^40 x 20—28 p, pedicel short, 
colourless. 
On Cotyledon umhiliuus. Britain, France, Belgium, 
Spain. 
The sori are often icm. and more across, and surrounded 
by a reddish-purple zone. The colour on the opposite 
side of the leaf to where a sorus is situated, is often deep 
rosy-purple. 
SAXIFRAGACEAE 
CHRYSOSPLENIUM 
Puccinia chrysosplenii ; Grev., Plowr., Ured., p. 211. 
Teleuto spores. Sori raised, brown, scattered or fre¬ 
quently in circular clusters, sometimes in concentric rings 
on both sides of the leaves, most frequently on the under 
surface ; spores oblong, somewhat spindle-shaped or club- 
shaped, tip rounded or slightly narrowed, thickened, scarcely 
constricted at the septum, base generally narrowed into the 
pedicel, smooth, pale yellowish-brown, 25—45 X 14-—18 
p, pedicel colourless, persistent, almost as long as the spore. 
On Chrysosplenium alternifolium and on C. oppositi- 
folium. Britain, Europe generally and Asia. 
SAXIFRAGA 
Puccinia saxifragae, Schlecht., Plowr., Ured., p. 208. 
Teleuto spores. Sori generally on the under surface of 
the leaf, soon naked, powdery, dusky-brown, scattered or 
clustered, and often crowded into each other, on variously 
coloured spots; spores ovate, elliptical or oblong, tip 
conical or warted, thickened, scarcely constricted at the 
septum, base rounded or narrowed, with delicate longi¬ 
tudinal ridges, pale brown, 28^—50 x 18—24 p, pedicel 
rather long, slender, colourless, deciduous. 
On Saxifraga granulata, S. stellaris, and on some culti¬ 
vated species. Britain and Europe generally. 
