236 rUNGl. [Sphceria. 



ternally Llackisli. Soiv. / t. 54. Fr. Sf/sf, Myc. v. 2. p, 330. 

 Grev. Sc. Crypt. Fl. t 327. With. v. 4. p. 356. 3Ioug. &, 

 Nest. I exs. n. 958. Sp. Poronia, Fr. Scler. Suec. n. 182. Hook. 

 Fl. Scot. 2. p. 5. Peziza punctata, Linn. Sp. Plant. 1652. 

 With, early editions. 



On hot beds, horse clung, &c. Occasionally in various parts of Great 

 Britain. — Gregarious ; | — 1 inch high, at first covered with a powdery 

 veiU which at length vanishes and leaves the outer portion of the plant 

 blackish, the disc being still white, but dotted with the orifices of the 

 perithecia^ which, from the depression of the cup are often rather con- 

 vergent than divergent. 



Div. 3. PuLViNATJE. (from pidvinatuSj cushion-shaped.) Sub- 

 hemispherical, immarginate, sessile. 



* Veil pidverulenf. Perithecia hlacli.* 



13. >S'. concentricn, Bolt, (zoned Sphceria) ; large suLglobose 

 brownish at length in general black concentrically zoned within, 

 perithecia oblong immersed. Bolt. t.\SO. Fr. Syst.Myc. v. 2. 

 p. 331. Scler. Suec. n.\A\. Sp.fr a xi?i€a, Sotv.'t. 160. With. 

 V. 4. p. 361. StromatospJicsria concentrica^ Grev. Fl. Ed. p. 355. 

 Hypoxylon concentricum, Sc. Crypt. Fl. t. 324. 



On trunks of dead or decaying trees, especially on ash. In perfec- 

 tion in spring or early summer. Common. — Often 2 — 3 inches broad ; 

 easily known by its beautifully zoned stroma. 1 have specimens from 

 Madeira on Erica arborea. A curious stipitate form is figured by 

 Persoon, Syn. t. \.f. 3, 4. 



14. S. fragiformis, Pers. (Sfraivberry Sphcsrid) : globose 

 vermilion-brown bright black within, perithecia ovate, ostiola 

 at length prominent. Pej^s. Syn. p. 9. t. ]. Moug. Sf Nest.! 

 exs. n. 273. Fr. Syst. Myc. v. 2. p. 332. Scler. Suec. ! w. 41. 

 Sp. bicolor, Bull. t. 495. /. 2. Sp. tuberculosa. Sow. I t. 374. 



/ 8. Sp. lycoperdoides, With. v. 4. p. 360. Purt.! v. 2. 8^ 3. 

 n. 1084. Stromatosphceria fragiformis, Grev. Sc. Crypt. Fl. 

 t. 136. Lycop. variolosum. Sow, t. 271. 



On beech bark, seldom on that of other trees. Very common. — 

 Generally round and about the size of a pea, but when growing on the 

 trunk of a tree, in consequence of plentiful nourishment, sometimes of 

 a considerable size and thickness from many individuals becoming con- 

 fluent, so as to lose in great measure its usual habit ; at first pale 

 pruinose, then bright rust-coloured bordering on vermilion, and gradually 

 Ijecomingtuberculated ; when old of a ferruginous black. Lijcoperdon 

 acariforme. Sow. ! t. 146, is certainly the present Sphceria with a 

 species of Isaria springing from its base.f 



* Analogous to the second subdivision of Cordyceps, Lut placed here that 

 S. rvfa and gelatinosa may stand next to the species of the following division 

 with coloured perithecia. • 



f It will be observed that in the genus Sphceria especially, I have differed 

 from M. Fries in the adjustment of Sowerby's species. This I have not done 

 in any case without the fullest examination, and, when possible, comparison 

 of the original specimens with those published by Fries in the Schromycetes 



