ON VINCA 177 
punctiform, brownish, often very numerous, scattered over the 
whole leaf-surface, sweet-scented, spherical, about 175 » diam. 
Uredospores. Sori hypophyllous, pallid-brown, of two kinds ; 
primary irregular, often elongated and curved, crowded and 
confluent, naked; secondary scattered, on roundish dirty-brown 
spots, long covered by the epidermis; spores globose to pyriform, 
aculeate, pallid-brown, 20—32m diam. or 20—46 x 16—24 p, 
with three germ-pores. 
Fig. 127. P. Vineae. wu, teleutospore, seen dry ; b, the same, seen wet; 
c, uredospore; d, the so-called ecidia. On Vinca major, all x 600. 
Teleutospores. Sori hypophyllous, on scarcely perceptible 
or conspicuous spots, minute, scattered or in groups, roundish 
or irregular, surrounded or half-covered by the torn epidermis,. 
pulverulent, dark-brown ; spores ellipsoid to oblong, rounded at 
both ends or attenuated downwards, hardly thickened at apex 
but with a pale papilla, not at all or faintly constricted, scrobi- 
culate, ochreous-brown, 35—54 x 18—27 4; epispore 3—4 4 
thick ; pedicels hyaline, deciduous, rather long. 
On Vinca major, V. minor. Not common. Spermogones in 
April; uredospores, May—June; teleutospores, July—October. 
(Fig. 127.) 
This is one of the most remarkable species of Puccinia found in Britain. 
There is considerable difference of opinion about its structure. The bodies 
referred to in the description given by Plowright (/.c. p. 161) as “secidia” are 
of a puzzling nature: they are not described by Sydow or Fischer, but are 
mistakenly considered by them as identical with the primary uredo-sori. 
They accompany the spermogones on the under side of the leaves, and 
are flatly pulvinate subepidermal erumpent sori, surrounded by the erect 
G. U. 12 
