132 BRITISH DISCOMYCETES. 



(c) On leaves. 

 26. Hymenoscypha petiolorum. (Rob.) 



Rather large, stipitate, often solitary ; cup fulvous, 

 concave, then plane, margined with somewhat triangular 

 teeth ; stem more or less long ; asci clavate ; sporidia 8, 

 oblong, curved, 2-guttulate, 17 X 4ju ; paraphyses filiform, 

 rather stout. 



Peziza petiolorum — Rob. in Desm., " Crypt. Fr.," 

 ed. i. 1158, ed. ii. 658; "Ann. Sc. Nat.," 1842, p. 91. 

 Peziza denigrans — Fckl., " Symb. Myco.," p. 309. Phialea 

 petiolorum — Gill., " Champ.," 102. 



Exs.— Desm., I c. ; Fckl, " F. Rh.," 2193. 



On petioles of beech, etc. Autumn. 



Cup about \ a line broad ; stem reaching sometimes 

 \ an inch in length. The margin is furnished with 

 minute, somewhat triangular teeth, easily overlooked in 

 dried specimens — not large enough to warrant putting it 

 in the subgenus Trichoscypha. 



Name — Petiole, the stalk of a leaf; from its habitat. 



Shrewsbury ! 



27. Hymenoscypha subtile. (Fries.) 



Cup stipitate, plano-convex, concave beneath, rather 

 firm, white, becoming pallid-ochraceous ; stem slender, 

 rather short ; asci cylindraceo-clavate ; sporidia 8, elliptic 

 or subfusiform, 5x2/*; paraphyses filiform, slender, 

 scarce. 



Helotium subtile — Fries, " Obs. Myco.," ii. p. 310 ; 

 " Summa Veg. Scan.," p. 354 ; Karst., " Myco. Fenn.," 

 p. 131 ; Cooke, "Handbk," 2130; Fckl., "Symb. Myco," 

 315. Peziza subtilis — Fries, "Sys. Myco.," ii. p. 157 ; "Eng. 

 Flo." v. p. 208. Phialea subtile— Gill., " Champ," p. 161. 



Exs.— Karst., "Fung. Fenn," 68; Fckl, "F. Rh," 

 1160; Roumg, "Fung. Gal," 1265. 



On decaying leaves of pine in shady woods. Autumn. 



Cup about 500 to 800/x broad, and 200 to 600^ high. 

 Scattered; at first white, becoming yellow when dried. A 

 very minute and delicate species. 



