HEL0TIU3I. 257 



C. On leaves of Dicotyledons. 



Helotium epiphyllum. Fries, Summa Veg. Scand., 

 p. 356; Phil., Brit. Disc, p. 163; Eelim, Krypt.-Flora, Disc, 

 p. 795, figs. 1-5, p. 771; Sacc, Syll., viii., n. 925. 



Scattered, almost sessile, at first closed, then expanding, 

 and becoming plane or slightly convex, with a delicate 

 margin, 1-4 mm. across; excipulum entirely composed of 

 hyaline, septate, closely interwoven hyphae 5-6 fj, thick; 

 smooth, pale ochraceous, disc often becoming mfescent with 

 age ; asci cylindric-clavate, tapering into a rather long, 

 ■slender pedicel, 8-spored ; spores usually irregularly 2-seriate 

 above, 1-seriate below, hyaline, smooth, elliptic-oblong or 

 fusoid, ends obtuse, at first continuous and guttulate, ulti- 

 mately 1-septate, straight or slightly curved, 14^20 x 4^5 ; 

 paraphyses septate, about 2 yu, thick, sometimes branched, 

 lips tinged yellow. 



Peziza epiphylla, Pors., Tent. Disp. Fung., p. 72. 



On dead leaves of oak, beech, sweet chestnut, &c. 



Specimen in Eehm, Ascom., n. 11, examined. 



Helotium phyllopliilum. Karst., Symb. Myc, p. 239 ; 

 Phil., Brit. Disc, p. 162 (not of Eehm, Kr.-Fl., Disc, 

 p. 796). 



Scattered or gregarious, closed and broadly clavate at first, 

 then expanding and becoming slightly convex, or sometimes 

 quite plane or oven slightly convex, up to 1 mm. across ; stem 

 short, rather stout, up to 1 mm. long, often slightly curved, 

 sometimes almost absent; glabrous, hyaline white or with 

 a tinge of yellow; excipulum parenchymatous, the cells at 

 the base minute, polygonal, 3-5 /u, across, above arranged 

 in a parallel series, very long and narrow, 10-18 x 3-4 ft. 

 finishing at the margin as free, distinct, curved and parallel 

 hyphae of equal length ; asci clavate, 8-spored ; spores 

 irregularly 2-seriate above, hyaline, cylindric- fusiform, 

 straight or slightly curved, for a long time continuous, then 

 1-septate, 10-12 x 2-5 fx; paraphyses hyaline, about 2 ^ 

 thick, tips slightly thickened. 



Peziza phyllopMla, Desin., Or. Fr., ser. i., n. 1159. 



Phialea phyllopMla, Gill., Disc. Fr., p. 105; Sacc, Syll., 

 n. 1046. 



VOL. IV. S 



