MR. F. CURREY ON THE FRUCTIFICATION OF COMPOUND SPHÆRLÆ. 283 
183. S. (NECTRIA) ACERVALIS, Moug.; Fr. El. ii. p. 88. Ta». XLIX. fig. 182, ascus with 
sporidia, X 325. Sporidia uniseriate, rarely biseriate, colourless, elliptical, uniseptate 
or pseudo-uniseptate, 0:0005 inch long. 
184. S. (NEcrRIA) AQurronn, Fr. El. ii. p.82. Tas. XLIX. fig. 183, ascus with sporidia, 
and free sporidia, x 325. Sporidia uniseriate, colourless, elliptical, pseudo-uniseptate 
by division of the endochrome, which is oleaginous or granular; 00005 inch long. 
185. SPHÆRIA ACERVATA, Fr. S. M. ii. p. 416. Ta». XLIX. figs. 184, 185, ascus with 
sporidia, and free sporidia, x 325. Sporidia biseriate, colourless, hyaline, curved, 
0:0003 to 0-0005 inch long. Very like (? different from) S. cupularis. Mr. Bloxam 
informs me that he has sometimes found the sporidia elliptical, uniseptate, or with 
several nuclei. 
186. SPHÆRIA CONGLOBATA, Fr. The Hookerian herbarium contains several plants 
marked S. conglobata, Fr.; but they are all specimens of S. pulvis-pyrius, some being 
subcuticular, some bursting transversely, some longitudinally, others forming a 
cæspitose mass, others in the usual scattered condition. They form a very instruc- 
tive series of specimens, showing the Protean habit of S. pulvis-pyrius. The speci- 
men of S. dioica, Fr., at Kew, is also a subeuticular form of S. pulvis-pyrius, a form 
by no means uncommon in this country. 
187. S. Bux1. Milton, Northamptonshire, Berkeley. Ta». XLIX. fig. 186, ascus with 
sporidia, highly magnified. Sporidia uniseriate, ? colourless, acuminate, elliptical, 
0-0005 inch long. Perithecia light yellow, rather longer than broad, with a small 
mamillate ostiolum. I doubt if the sporidia are not sometimes uniseptate. The 
fruit was hardly ripe, although a good many sporidia were visible. 
Div. 14. CONFLUENTES. 
| 188. SPHÆRIA SCORIADEA, Fr. El. ii. p. 87. Ta». XLIX. fig. 187, sporidia, x 325. Spo- 
ridia reddish brown, opaque, lageniform, when young with a gelatinous envelope. 'The 
tips of the sporidia are paler than the body ; they are irregular in length and breadth, 
varying from 0-0016 to 0:0028 inch in length. There is some doubt whether - 
plant be not a Verrucaria. See Annals of Nat. Hist. vol. vi. p. 360, ren s 
* British Angiocarpous Lichens,” p. 39, under * Verrucaria conferta, Tayl. 
189. SPHÆRIA RHIZOGENA, Berk. Ta». XLIX. fig. 190, — with sporidia, X 325. 
Sporidia uniseriate, rarely biseriate, colourless or greenish, probably brown when 
ripe; elliptical, sometimes slightly constricted in the middle, uniseptate or biseptate 
or (?) sometimes cellular, 0:0005 to 00006 inch long. On the roots of Gleditschia 
triacanthos, washed bare by the Ohio freshets. Perithecia seated on or immersed in 
a ferruginous woody or leathery stroma, producing, when young, Very minute sub- 
indrical spermatia. 
190. er et, Ness; Fr. S. M. ii. p. 424. Tas. XLIX. fig. 189, ascus with 
sporidia, x 325. Sporidia uniseriate, frequently (if not usually) slightly overlapping, 
dark brown, cellular, acuminate, constricted in the middle, 0:0011 to 0:0012 inch long. 
This species — S. elongata, Fr. 
191. Sez ERrA ? Dorurea, Fr. (? Mont.), 
VOL. XXII. 
S. M. ii. p.423. Ta». XLIX. fig. 190, ascus 
2P 
