DERMATEA. 343 



The cups break through transverse slits in the bark, 

 forming elongated groups, arising from a common stroma ; 

 within they are cinnamon-yellow. 



Name — After the Rev. W. Houghton. 



Lilleshall, Salop! (Rev. W. Houghton). 



8. Dcrmatea rhabarbarina. (Berk.) 



Minute, scattered, erumpent, plane or slightly convex, 

 clothed with tawny meal ; flesh rhubarb-colour ; asci 

 clavate, broad ; sporidia 8, oblong or oblong-elliptic, with 

 one or more large guttse, at length 1 to 2 pseudo-septate, 

 16 — 20 x 5 — 7/x ; paraphyses numerous, clavate, brown 

 at the apices, adherent. 



Peziza rhabarbarina — Berk., "Eng. Flo.," v. p. 197. 

 Patellaria rhabarbarina — Berk., " Ann. Nat. Hist.," 

 No. *89; and "Outl.," p. 373; Cooke, " Handbk.," 

 Xo. 2164. Pezicula rhabarbarina — Tul., "Select. Fung. 

 Carp," iii. p. 183; Fckl, " Symb. Myco.," 278. Peziza 

 ardenensis— Mont., "Ann. Sc. Nat," 1836, p. 287, t. 13, 

 f. 5. Hdotiwm rabi — Spree in Rabh, "Fung. Eur," 

 exs. 717. Pezicula Bosa? — Sacc, " Myco. Ven. Sp," 1513. 

 LachneUa rhabarbarina — Fries, " Summa Veg. Scan," 

 p. 365. 



Exs.— Rav, No. 46 ; Berk, 271 ; Lib, No. 231 ; Rabh, 

 " Fung. Eur," No. 717, nov. ed. No. 223 ; Fckl, " F. Rh," 

 No. 2075 ; Phil, " Elv. Brit," No. 91 ; Sacc, " Myco. Ven. 

 Sp," No. 1513 ; Rehm, " Asco," No. 355 ; Winter, " Fungi 

 Eur," 2122; Cooke, "Fung. Brit," ed. ii. 656. 



On dead branches of the wild rose. 



The whole branch is sprinkled with minute scattered 

 dots, resembling the shield of a Lichen, fixed by a single 

 point into the bark, so that where they have been rubbed 

 off a little hole is seen in the bark with raised edges, 

 filled with the bright rhubarb-coloured flesh of the base 

 of the cup, which can scarcely be called a stem. The 

 disc is darker when dry, and quite flat, with a very 

 narrow border; but when moistened it often becomes 

 convex, and is then of an ochraceous hue, bordering on 

 ferruginous (Berk, " Eng. Flo."). 



