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 fyt ; paraphyses filiform, 

 rather stout. 



Peziza petiolorum Rob. in Desrn., " Crypt. Fr.," 

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

 Peziza denigrans Fckl., " Symb. Myco," p. 309. Pkialea 

 petiolorum Gill., " Champ.," 102. 



Exs. Denm, 1. 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, 5 X 2/j. ; 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/i broad, and 200 to 600^u high. 

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

 very minute and delicate species. 



