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 4u; paraphyses filiform, 
rather stout. 
Peziza petiolorwn—Rob. in Desm., “Crypt. Fr.,” 
ed. i. 1158, ed. ii. 658; “Ann. Sc. Nat.,” 1842, p. 91. 
Peziza denigrans—Fck1., “Symb. Myco.,” p.309. Phialea 
petiolorwm—GilL, “Champ.,” 102. 
Exs.—Desm., J. c.; FekL, “ F. Rh.,” 2193. 
On petioles of beech, ete. Autumn. 
Cup about 4 a line broad; stem reaching sometimes 
4 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 2u; paraphyses filiform, slender, 
scarce. 
Helotium subtile—Fries, ‘Obs. Myco.,” ii. p. 310; 
“Summa Veg. Scan.,” p. 354; Karst., “Myco. Fenn.,” 
p. 1381; Cooke, “Handbk.,” 2130; Fekl., “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; Fekl, “F. Bh.,” 
1160; Roumg,, “ Fung. Gal.,” 1265. 
On decaying leaves of pine in shady woods. Autumn. 
Cup about 500 to 800u broad, and 200 to 600u high. 
Scattered; at first white, becoming yellow when dried. A 
very minute and delicate species. 
