824 SPH^RIACEI. 



AscopHORE. — Loosely circumscribed; perithecia scattered 

 (sometimes crowded), large, saucer-shaped; ostiola erumpent, 

 somewliat united; sporidia cylindrical, curved, obtuse. — Diatrype 

 stipata, B. 4- Br. Ann. N.H. no. 843-970*. S. dissepta, Fr. S.M. 

 ii. p. 392. Fries, exs. no. 224. Eng. Fl. v. p. 249. aS^. stipata, 

 Curr. Phil. Trans. 1857. Linn. Trans, xxii. t. 49,/. 197. Coolce 

 exs. no. '2^^. S. saturnus, Sow. t. 216. Valsa hypodermia, B.4'- 

 Br. Jnn. N.IL no. SQ2,t. 10, f. 18 (not Fries). Quaternaria dis- 

 septa, Tul. Carp. iii. p. 107. 

 On branches of elm, &c. 



The scutellffiform conceptaculum I5-2 lines broad is most distinct, elliptic 

 or slightly flexuous from the confluence of two individuals ; in the centre is 

 a single perithecium, rarely two, covered with a dingy substance with a 

 darker, slightly prominent ostiolum in the centre, and a slender neck, sepa- 

 rated from the conceptaculum by the loose wood-coloured cortical stroma. — 

 M.J.B. Sporidia (-OOOZ-'OOOO in.) •0177-'022 m.m., sometimes reaching 

 (•OOi in.) '0:^0 m.m. long. 



2468. Valsa controversa. Fr. " Variable Valsella." 



Circumscribed ; stroma cortical, black ; perithecia immersed ; 

 ostiola erumpent, rather prominent ; asci subclavate ; sporidia 

 biseriate, hyaline, ovato -oblong, containing four nuclei. — Fr. 

 S.V.S. p. 411. Sj)h. controversa, Desm. Ann. Sc. Nat. ser. ii. 

 vol. XYu.p. 102. Desm. exs. no. 1255. B. ^ Br. Ann. N.H. no. 

 602. 



On dead twigs of ash, Sophora Japonica, herbaceous stems, 



&c. 



Varying somewhat in external appearance on different plants, a greater or 

 less number of perithecia beiug collected together, and the spots of a more 

 or less deep-black. 



2469. Valsa dry ina. Curr. " Brown Oak Valsella." 



Perithecia pyriform, imbedded in a dirty-brown stroma ; os- 

 tiola rather shorter than the perithecia, somewhat thickened to- 

 wards the apex ; sporidia biseriate or crowded, colourless, strongly 

 curved; asci and sporidia very delicate and hyaline. — Curr. 

 Linn. Trans, xxii. t. 48, /. 135 b. B. ^' Br. Ann. N.H. no. 850. 



On dead oak branches. Weybridge. 

 Sporidia ('OOOS in.) '0076 m.m. long. 



2470. Valsa concamerata. Curr. " Woolly Oak Valsella." 



Perithecia raising the inner bark into a dome-shaped concep- 

 taculum, tufts of perithecia united by white woolly fibres ; spo- 



