230 British Uredinee and Ustwlaginee. 
broad ends. The teleutospores are of two kinds, similar in form, but 
differing in colour. In the first kind the spore-walls are hyaline, and 
the contents orange ; in the second, the spore-walls are thicker, and 
brown or yellowish brown. The dark spores are the least abundant, 
and do not germinate so soon as the paler ones do, although they do 
so within a°comparatively short period. So far as is at present known, 
G. sabine has its zcidiospores on the common pear only, which cul- 
ture I have successfully made in seventeen experiments. e 
Gymnosporangium confusum. Plow. 
A cidiospores—Pseudoperidia on thickened roundish spots, orange 
above, and often surrounded by a reddish or purple line, 
cylindrical or cylindrico-fusiform, opening by lateral longitu- 
dinal fissures, at length fimbriate. Spores subglobose, pale 
brown, verrucose, 15-20 in diameter. 
Teleutospores—Mycelium perennial. Spore-masses vernal, at first 
tuberculate, .dark chocolate-brown, almost black, soon becom- 
ing cylindrical, often compressed, 5-8 mm.. long, then rich 
chestnut-brown, swelling when moist, and speedily covered with 
golden-yellow promycelial spores. | Spores smooth, oval or 
elliptical, generally acute at both ends, of two kinds, the more 
numerous with hyaline spore-walls and orange-yellow contents, 
the other with dark brown, thick walls, 40-50 x 20-25p, with 
from two to four germ-tubes. Pedicels long (80-100), hyaline. 
(Plate IV. figs. 13 and 14.) 
Synonyms. 
Ecidium penicillatum, Mull. (?) 
cidium mespilt, D.C. Winter, Zoe. cit., p. 266. 
Lixsiccati. 
Vize, “Micro. Fungi Brit.,” 454, 545, 551. 
Ecidiospores on Crategus oxyacantha, Mespilus germanica, 
grandifiora (?), Pyrus vulgaris, June to August. 
Teleutospores on Juniperus sabina, April to May. 
BIOLoGY.—This species has hitherto been confounded with G. 
sabine, which it resembles in many points. When the zecidiospores 
occur on Crategus oxyacantha, the spermogonial spots are more 
brightly coloured than those of G. clavarieforme. The zcidiospores 
