_ Gymnosporangium. 231 
united at the apex; the laciniz are joined at intervals by 
short transverse trabeculae. Spores subglobose, finely verru- 
cose, brown, 25-40 X 18-25, 
Teleutospores—Mycelium perennial, causing fusiform swellings on 
the branches of the host-plant. Spore-masses vernal, 
cylindrical or clavate, generally compressed laterally, 8- 
1o mm. high, at first blackish, firm, then red-brown and 
gelatinous. Spores broadly fusiform or bipyriform, central 
constriction almost none, yellowish brown or chestnut-brown, 
with four germ-pores, 38-50 xX 23-26y, (Plate IV. figs. 
rz and 12.) 
Synonyms. 
Winter in Rabh., “ Krypt. Flor.,” vol. i. p. 232. 
Tremella sabing. Dicks., “Plant. Crypt. Brit.,” vol. i. p. 14; 
“Eng. Bot.,” t. 710. With., vol. iv. p. 68. Purton, “ Midl. Flor.,” 
vols. iL, iii, No. 883. 
Podisoma sabine, Fries. Berk., “Eng. Flor.,” vol. v. p. 362. 
Pers., “ Disp. Meth.,” t. ii. fig. 1. ‘Eng. Bot.,” t. 710. Berk., 
“Outl.,” t. ii. fig. 4. Cooke, “ Hdbk.,” p. 510; “ Micro. Fungi,” 
4th edit., p. 214. 
Myxosporium colliculosum.  Berk., “Outl.,” p. 325. Sow., 
t. 409. 
Restelia cancellata, Reb. Berk., ‘Eng. Flor.,” vol. v. p- 373- 
Sow., t. 409, 410. Cooke, “ Hdbk.,” p. 533; “ Micro. Fungi,” 
4th edit., p. 193, t. ii. figs. 20, 21. 
LExsicati. 
Berk., 58, 107. Cooke, i. 332. Vize, “ Micro. Fungi Brit.,” 
37, 55+ 
Ecidiospores on Pyrus communis, July to September. 
Teleutospores on Juniperus sabina, April to May. 
BIoLocy.—All the Gymnosporangia are easy of cultivation. If the 
gelatinous masses be placed in water they swell up, and in twelve or 
eighteen hours are covered by a golden-yellow powder, the promycelial 
spores. ‘These, diffused in water and applied to the proper host-plant, 
are almost certain to produce ecidiospores. The teleutospores in the 
present species vary somewhat in shape, being often slightly contracted 
at both ends so as to resemble two pyriform bodies joined at their 
