SPH^EIACEI. 887 



2S80. Sphaeria revelata. B. S^ Br. " Uncovered SphEeria." 



Covered, globose, large ; ostiola short, papill^eform, ultimately- 

 exposed ; asci linear, flexuous ; sporidia iiniseriate, oblong, bi- 

 septate. — B. ^' Br. Ann. X.H. no. 634, t. 11,/. 18. 



On branches of lilac, alder, &c. Jan. Apethorpe. 



A.t first completely concealed beneath the rough bark, and at length only 

 man'fest from the ostiola thrusting off little patches o'' the matrix, and then 

 appearing solitary or scattered on white spots. Perithecia globose, large ; 

 ostiola papilloe'^orm. distinct ; asci linear, flexuous ; piraphyses long, slender ; 

 sporidia uniseriat*, oblong, hyaline, biseptate, with very distinct endo- 

 chromes. — B, & Br. 



2661. Sphaeria quadxinucleata. Curr. "Four-nucleate 



Spheeria.'' 



Perithecia small, subglobose ; ostiola mamillate, piercing the 

 outer bark ; sporidia biseriate, closely packed, colourless, nar- 

 rowly oblong, pointed or rounded at the ends, quadrinucleate. — 

 Curr. Linn. Trans, xxii. p.3'2D, t. 58,/. 90. 



On sticks. Sept. "Weybridge. 



Sporidia ("0006 in.) '015 m.m. long. 



2662. Sphaeria aucta. B. 4' ^^- *' Appendiculate Alder 



Sphaeria." 



Scattered, covered ; perithecia globose, collapsed, minutely 

 tomentose, neck oblique, constricted below, confluent with the 

 shortly fusiform ostiolum ; asci large ; sporidia oblong-elliptic, 

 appendiculate at either end, 1-3 septate. — B. ^ Br. Ann. N.H. 

 7Z0. G28, <. 10,/. 11. Fckl.exs.no. 1998. Calospora aucta, Fckl. 

 Syin. M}jc. p. 191. Cryptospora aucta, Tul. Carp. \\.p. 152. 



On twigs of birch and alder. 



Scattered, scarcely visible externally, except from the swelling of the 

 bark above the perithecia. Perithecia globose, obscurely tomentose, soon 

 collapsed. Asci broad, d'^licate. Sporidia elliptic, with a truncate process 

 at either extremity ; at first uniseptate, with an endochrome of the same 

 form as the cells. This eventually is divided into two nuclei, between which 

 a new septum is formed, so that the sporidia have either one or three septa, 

 in which latter ease there is a constriction at each articulation. — B. d: Br. 



2663. Sphaeria ditopa. Fr, " Variable Alder Sphaeria." 



Scattered ; perithecia covered, free, globose, at length col- 

 lapsed, black ; ostiola erumpent ; asci polysporous, or octo- 

 sporous ; sporidia hyaline. — Crypiospora suffusa, var. minor, 

 Tul. Carp. li.p. 145. 



