Sphceria.] 



FUNGI. 241 



t. 3./ 6, 7. Fr. St/St. Myc. v. 2. p, 349. Scler. Suec. / n. 342. 

 3fouff. Sf Nest. > n. 866. Sp. depressa, Bolt. t. 122. f. I. 



On willow branches. Not uncommon. — Plant 2 — 3 lines broad, 

 gently convex, brownish, then black. Perlthecia in a single row, globose ; 

 but often altered in form by mutual [)res.sure, resting upon the matrix. 

 Ostiola projecting slightly, often stellate. When cut off horizontally 

 beneath the stroma a distinct black line is seen upon the wood, which 

 is proved by a vertical section to arise from a thin black stratum con- 

 tinued from the outer coat of the stroma and running between the baric 

 and the wood. 



30. S. unduldta^ Pers. (interrupted Sphceria) ; effused inter- 

 rupted waved black white within, ostiola rather prominent sub- 

 rotund. Pers. St/n. p. 21. Moug, ^- Ntst. ! 7?. 371. Hook. 

 Scot. 2. 2^' '5. Fr. Sf/st. Myc. v. 2. p. 350. Grev. Sc. Crypt, 

 Ft. t. 223./. 1. 



On dead branches of trees. By no means so common as the follow- 

 ing species, of which Fries judges it a mere variety. — It is liable to bo 

 confounded with some states of Sp. lata. At least I have seen speci- 

 mens of that species marked for the present on high authority. It nuiy 

 be easily distinguished by being erumpent. 



31. S. stigma, HofFm. (black dotted Sphceria) ; effused ofteu 

 nearly surrounding the branch flat even, at length black, ostiola 

 nearly plain subimniersed. lloffni. Veg. Crypt. 1. t. 2. f. 2. 

 3Ioug. c^- Nest. ! n. 2>12. Fr. Syst. Myc. v. 2. p. 350. Sdcr. 

 Suec. ! ?2. 46. Stromatosphccria stigma, Grev. Sc. Crypt. FL 

 t. 223. /. 2. — y. S. decorticcms, Sow. t. 137. S. decorticala^ 

 Purt. V. 2 S)- 3. n. 1093. iMoug. S^- Nest. ! n. 373. 



On sticks. Extremely common. — JMany inches long, throwing off the 

 cuticle exactly in the manner of Thdepliora comedois, varying with t!.e 

 ostiola sunk in a little pit and j)rominent. At first brownish, at len-th 

 black, generally cracked transversely. Sowerby had both states i:i 

 view, but the magnified figure at least belongs to the variety. His 

 S.cincrea! t. 37'3. f. 11, appears to me an altogether abortive state ; 

 tliere are no distinct perithecia in it. 



32. >S'. disciformis, Iloffni. (disc-like Spharia) ; orbicular 

 plain even black white witliin, perithecia attenuated into a 

 slender neck, ostiola punctiforni. IlofJ'm. J(g. Crypt. 1. /. -1. 



/. 1. uMoug. .y Nest./ n. 80. Fr. Syst. Jfyc. v. 2. p. 353. 

 Scler. Sued n. 71. Stromatosjdiccria discij'onnis, Grev. Sc. 

 Crypt. Fl. <. 314. 



On dry branches of beech, t^vc. Very common. — About two lines 

 broad, at first reddish, more constantly rounil than S. bullata, flat or 

 depressed and sometimes waved, not at all convex. Ptritkecia uiortr 

 oblong ; osdo/fi prominent or inunersed. This has been generally con- 

 foundetl with 6'. bullata ami uummu/urit/, so that I iuive not givrn tl.c 

 older English synonyms. The figure of i?owerby, /. 'Jlfi, was, I am 

 inclined to think, maiic from the [)resent species, l)nt it is evidently 

 sli^'litly niodified in conseciuencc of his having .S. hulhitu also in view. 

 In his herbarium both the sjjecies are pasted on the same paper with a 

 conunon label. l£ven Dr. Circvillc appears at fir^t to have confounded 



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