330 OCHROPSORA 
Aicidiospores. Aicidia scattered pretty regularly over the 
lower surface of the leaves, not very 
crowded, shortly cylindrical, white, 
with torn revolute margin; spores 
irregularly oblong, colourless, thin- 
walled, very delicately verruculose, 
18—30 x 15—21 p. 
[Uredospores. Sori hypophyllous, 
small, roundish, scattered, not more 
than + mm. diam.; spore-mass grey- 
Fig. 248. 0. Sordi. cid- ish or yellowish-white, surrounded 
ium leucospermum. a, ecidia 
on leaf of 4. nemorosa, nat. by a circle of paraphyses, which form 
size; b, the same, x2; c, 
ecidiospores, x 600. 
a kind of peridium, but their upper 
ends, when mature, are free and sub- 
clavate; spores subglobose to ovate, pale-brownish, distantly 
verrucose, 25—28 x 18—25 uw; epispore 1—14 yu thick, with no 
perceptible germ-pores. 
Fig. 249. 0. Sorbi. Section of teleuto-sorus, before the division of the spores 
into four cells (one spore is shaded) ; u, basidiospores. (After Fischer.) 
Teleutospores. Sori hypophyllous, 4—4 mm. diam., at first 
covered by the epidermis, pustulate, pale flesh-colour, roundish 
or oblong, clustered in groups; spores cylindrical, rounded 
above, crowded, grey, granular, subopaque, 70 x 10—18 p, at 
length divided into four cells; basidiospores fusiform, 22— 
25 x 8 p.] 
AKeidia on Anemone nemorosa, April—June, not common, 
Oxford, Cambridge, Devon, North Wales, Yorkshire, Scotland, 
ete. [Uredo- and teleutospores on Pyrus Aucuparia, August 
and September, not yet observed in Britain.] (Figs. 248, 249.) 
