914 SPHJERIACEl. 



ties, nniseptatc, eacli cell containing two small sporules or nuclei. 

 — Cooke Seem. Journ. (1866) t. 50, y. 13. Sphopria maculceformis 

 on Castaiiea, Fckl. exs.no. 817. Gonn. ^ Rabh. y.t. 8,/. 109. 



On dead leaves of Castanea vesca. Darenth Wood, Kent. 



Tutermixed with S. ohlivia and S. maculcBformis, from which it is quite dis- 

 tinct. Sporidia ('0005 in.) '0125 m.m. long. 



2748. Sphaerella simulans. Cooke. " Imitative SphfErella." 



Peritbccia arranged in groups on the under surface ; asci cy-- 

 lindrical, containing large sausage-shaped uniseptate sporidia. — 

 Cooke Seem. Journ. (1866) t. 49,/. 12. Gonn. ^ Rahh. v. t. 2,/. 

 23. 



On dead oak leaves. Highgate, 1866. 



The perithecia are grouped in a similar manner to those of S. maculeeformis, 

 with which it probably has hitherto been confounded, but from which it may 

 easily be distinguished by the large sausage-shaped, uniseptate sporidia 

 (•0003 in.) -02 m.m. long. 



2749. Sphaerella conglomerata. Wallr. " Clustered 



Sph£erella." 



Hypophyllous, black, innate, densely conglomerated and con- 

 fluent ; spots gregarious, minute ; sporidia stipitate, obovate-ob- 

 long, uniseptate, scarcely constricted, hyaline. — Awd. Gonn. ^ 

 Rahh. Y. p. 6,t. 6,f. 88. Sphcej^ia conglomerata^ Wallr. p. 814. 

 Fckl. exs. no. 832. Sphceria insularis, Fckl. exs. no. 827. Stig- 

 matea jnaculmformis, Fckl. exs. no. 422. 



On dead leaves of Alnus glutinosa. Gomshall. 



2750. Sphsezella punctiformis. P<?7'S. "Point.like Sphterella.'' 



Scattered ; perithecia innate, punctiform, even, rather shining, 

 black, slightly prominent, umbilicate by collapsion ; asci minute, 

 clavate ; sporidia uniseriate or biseriate, hyaline, elliptical, ob- 

 tuse at either extremity, granular, greenish-yellow. — Cooke 

 Seem. Journ. (1866) ^. 50, /. 14. Fckl. exs.no. 816. Sphcerella 

 Gookeana., Awd. Gonn. ^* Rahh.pt. y. p. 2. t. l,f. 6. Sphceria punc- 

 tiformis, Pers. Syn. p. 90. Fr. S.M. \\.p. 525. Eng. Fl. v. p. 279. 

 Berk. Outl.p).^01. Johnst. FL Berw. ii. 130. Ciyptosphwria punc- 

 tiformis, Grev. Fl. Ed. p. 362 (in part). Sphcej^ia subconjluens, Sow. 

 (in part.) 



On dead leaves. Common. [United States.] 



Length of asci (-0013 in.) -034 m.m., of sporidia ('00035 in.) -009 m.m. This 

 appears to be the true >§. punctiformis, to which other species assimilate in 

 external appearance. 



