110 UROMYCES 
clusters, cup-shaped, whitish-yellow, with a torn revolute 
margin; spores densely and minutely verruculose, yellowish, 
Fig. 62. U. Behenis. a, ecidia on early leaf, b, ecidia on later leaf, of 
S. inflata ; two televitospores. 
Teleutospores. Sori hypophyllous and on the stems, often 
surrounding the secondary ecidia, irregularly scattered, gre- 
garious or circinate, rounded or oblong, covered for a considerable 
time by the lead-coloured epidermis, rather small and compact, 
brownish-black or black ; spores subglobose or obovate, rounded 
above and thickened (as much as 11), smooth, pale brown, 
25—35 x 20—27 w; pedicels persistent, faintly yellow, thick, 
as much as 75 p long. 
On Silene inflata (latifolia), S. maritima. Not common. 
Acidia and teleutospores, July—October. (Fig. 62.) 
The spots occupied by the ecidia vary in colour, but the primary ones 
are often tinged or margined with purple. This is one of the species 
whose ecidiospores are capable of reproducing the ecidia, as Dietel has 
shown (Flora, lxxxi. 395, 1895). The primary ecidia, on the earlier 
leaves, are in roundish groups or concentric circles, only a few being 
scattered. The secondary ecidia, on the younger leaves, stand more often 
singly and are spread over a larger area; the teleuto-sori spring from 
the same secondary mycelium or are formed separately. The secondary 
wcidia are not confined to the beginning of the season, but continue to be 
produced till the end of autumn, being in fact the’ representatives of 
the uredo-sori. 
On this accouut this species is very interesting biologically. The 
primary scidia arise from infection by comparatively few basidiospores ; 
the secondary arise from the more widely dispersed acidiospores of the 
