826 SPH^RIACEI. 



a disc ; asci linear-oblong ; sporidia biseriate, cylindrical, 

 colourless, curved. — Fr. S.V.S.p. 412. Fckl. exs. no. 609. Curr. 

 Linn. Trans, xxii. t. 48. /. 147. S. abietis, F?\ S.M. ii. p. 398. 

 Fries, exs. no. 11. Eng. Fl.Y.p.24S). Cucurhitaria pinastri^ Grev. 

 t.bO. 



On branches of Pinus ahies. 



Sporidia (•O003--000G in.) 'OOZO-'OIS m.m. long. 



2474. Valsa aurea. Fckl. *' Almond-spored Valsella." 



Forming dark bullate spots, caused by the black perithecia 

 nestling beneath the thin epidermis, somewhat depressed around 

 the ostiola, which are at first covered with a bright orange disc, 

 at length naked ; perithecia from 4-6 in a group, black, with 

 straight convergent necks, never confluent ; asci cylindrical, 

 containing eight almond-shaped, large, uniseriate, hyaline spori- 

 dia.— i^cZ:/. ^m«w. i^.iY./r;. 20 (1861), Nke.Pyr. Germ. p. 220. 

 Valsa amygdalina, Cooke Seem. Journ. Bot. t.f. 21 (1866), no, 

 446. Cooke exs. no. 250. Valsarntila, Tul. Carp. ii.p. 196 (1863). 

 Wnestneia aurea^ Fckl. exs. no. 681. 



On small twigs of hornbeam. 



Sometimes on the same twigs as V. hitorulosa, from wliich it is distin- 

 guished with the naked eye by the dark prominent perithecia and bright 

 orange disc. 



2475. Valsa ambiens. Fr. " Circle Yalsella." 



Spermogonia. — Conceptaculum none, cells black, circinating; 

 disc dingy, tendrils pale; spermatia minute. — Cytispora car- 

 phospet^ma, Fr. S.M. ii. p. 543. Fng. Fl, v. p. 282. Cytispora leu- 

 cosperma, Fr. S.M.ii.p. 543. Desm. exs. no. 489. 



AscoPHORE. — Perithecia immersed, disposed in circles ; osti- 

 ola even, subglobose, surrounding a dirty-white waxy disc ; 

 sporidia colourless, 4 or 8 cylindrical, curved, obtuse, hyaline. — 

 Fr. S.V.S.p. 412. Tul. Carp. ii.p. 176. Fckl. exs.no. 616. Cooke 

 exs. no. 256. Curr. Linn. Trans, xxii. t. 48, /. 138. Sphceria am- 

 hiens, Fr S.M. ii. p. 403. Fries, exs.no. 8. Moug. exs. no. 872. FL 

 Dan. t. 2039,/. 1. Fng. Fl. y. p. 250. Berk. exs. no. 80. Valsa 

 tetj^aspora, Curr. Linn. Trans, xxii. t. 48,/. 148 (partly ). Fckl. exs. 

 710.2141. 



On dead branches, especially Rosacece. Common. 



[United States.] 



Varying much in size, in the degree of elevation above the general sur- 

 face and the colour of the disc, which is sometimes jet black. — M.J.B. 

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



