SPH^EIACEI. 915 



2751 > Sphaerella punctoidea. CooTte. " Dot Sphferella." 



Perithecia black, shining, semi-innate, prominent, disposed in 

 little groups of seven or eight on the upper surface of leaves, col- 

 lapsed and concave when dry ; asci cylindrical, curved or flexuose ; 

 sporidia uniseriate, elliptical or subcymbiform ; hyaline highly 

 refractive and colourless. — Cooke Seem. Joz^r/i. (1866) ^.49,/. 9. 



On the upper surface of oak leaves. Shere, Surrey. Jed- 

 burgh. 



Length of asci ("0021 in.) '056 m.m., of sporidia ("00045 in. ("0125 m.m. 



Quite distinct from S. pHiictiformis, with which it has probably been con- 

 founded; the asci are cylindrical, the sporidia are longer, and the perithecia 

 are different in habit and disposition, always occurring in small groups and 

 on the upper surface only. S. macidcBformis often occurs on the under surface 

 of the same leaf. 



2752. Sphaexella znyriadea. B.C. " Cloudy Sph^eria." 



Epiphyllous. Perithecia very minute, numerous, black, aggre- 

 gated in large unequal cinereous patches ; asci subfusiform ; spo- 

 ridia biseriate, elongated, triseptate, pointed at each extremity. — 

 Cooke Seem. Journ. (1866) ^.49,/. 10. Fckl. exs. no. 825. Cooke 

 exs. no. 172. Gonn. ^' Rabh. v. t. 1,/. 9. Rahh. F.E. no. 149. Cooke 

 L.F.no. 84. Sphceria myriadea, D.C.Fl. Fr.Vi. p. 145. Duhy. 

 Bot. GaU.ii.p.llO. Desm. Mem.Soc. Roy. de Lille 1843. West. ^' 

 Wcdl. exs. no. 73. 



On dead oak leaves. Shere, Surrey. [United States.] 



Sporidia ("OOIS in.) '035 m.m. long. 



2753. Sphaerella millegrana. CooJie. " Thou sand -grain 



Sph^rella." 



Epiphyllous. Perithecia scattered, numerous and minute ; asci 

 short, cylindrical ; sporidia crowded, linear, and uniseptate, the 

 upper cell being ventricose. — Cooke Seem. Journ. (1866) t. bO,f. 

 15. Gonn. 4- Rabh. v. t. 2, J. 17. 



On the upper surface of dead leaves of hornbeam. Shere, 

 Surrey. 



Perithecia resembling those of S. rayriadea, but not so closely aggregated, 

 and not collected in definite patches. Sporidia ("0006 in.) "015 m.m, long. 



2754. Sphserella latebrosa. Coolie. " Sycamore Sphferella." 



Hypophyllous. Perithecia scattered over the surface, innate, 

 minute, globose, black, scarcely visible till the epidermis is de- 

 stroyed by exposure ; asci cylindrical, ventricose ; sporidia elon- 



