MR. F. CURREY ON THE FRUCTIFICATION OF COMPOUND SPH^RI^E. 283 



183. S. (Nectria) acervalis, Moug. ; Fr. El. ii. p. 83. Tab. XLIX. fig. 182, ascus with 

 sporidia, X 325. Sporidia uniseriate, rarely biseriate, colourless, elliptical, uniseptate 

 or pseudo-uniseptate, O'OOOo inch long. 



184. S. (Nectria) Aquifolii, Fr. El. ii. p. 82. Tab. 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 ; 0*0005 inch long. 



185. Sph^ria acervata, Fr. S. M. ii. p. 416. Tab. XLIX. figs. 184, 185, ascus with 

 sporidia, and free sporidia, x 325. Sporidia biseriate, coloui-less, hyaline, curved, 

 0-0003 to 00005 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. SPHiERiA CONGLOBATA, Fr. The Hookerian herbai-ium contains several plants 

 marked S. conglohata, Fr. ; but they are aU specimens of S.pulvis-pt/rius, some being 

 subcuticular, some bursting transversely, some longitudinally, others forming a 

 caespitose 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 subcuticular form of S. pulvis-pyrius, a form 

 by no means uncommon in this country. 



187. S. Buxi. Milton, Northamptonshire, Berkeley. Tab. 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. Sph^ria scoriadea, Fr. El. ii. p. 87. Tab. XLIX. fig. 187, sporidia, x 325. Spo- 

 ridia reddish brown, opaque, lagemform, when young with a gelatinous envelope. The 

 tips of the sporidia are paler than the body ; they are u-regxilar in length and breadth, 

 varying from 0-0016 to 0-0028 inch in length. There is some doubt whether this 

 plant be not a Verrucaria. See Annals of Nat. Hist. vol. vi. p. 360, and Leighton's 

 •British Angiocarpous Lichens,' p. 39, under " Verrucaria conferta, Tayl." 



189. Sph^ria rhizogena. Berk. Tab. XLIX. fig. 190, ascus with sporidia, x 325. 

 Sporidia uniseriate, rarely biseriate, colourless or greenish, probably brown when 

 ripe ; eUiptical, sometimes sHghtly constricted in the middle, uniseptate or biseptate 

 or (?) sometimes cellular, 00005 to 0-0006 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- 

 cylindrical spermatia. 



190. Sph^ria Spartii, Nees ; Fr. S. M. ii. p. 424. Tab. XLIX. fig. 189, ascus with 

 sporidia, X 325. Sporidia uniseriate, frequently (if not usually) slightly overlapping, 

 dark brown, cellular, acuminate, constricted in the middle, 00011 to 0-0012 inch long. 

 This species = S. elongata, Fr. 



191. Sph^ria ? DoTHEDEA, Fr. (? Mont.), S. M. ii. p. 423. Tab. XLIX. fig. 190, ascus 



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