44 BEITISH DISCOMYCETES. 



Subgenus I. — Acetabula. Fckl. 



Cup entire, naked ; stem stout, distinct, often sulcate. 



Key to the Species. 



Stem sulcate, equal, or broader below . . . . acetabulum. 



Stem not sulcate, attenuated below . . . . . . insolita. 



Stem sub-attenuated below, with slender rooting fibrils Percevali. 



i 



1. Peziza acetabulum. Linn. 



Cyathiform, dingy, ribbed externally with branching 

 veins, which run up from the short, lacunose, fistulose 

 stem; asci cylindrical; sporidia 8, elliptic, 18 — 20 x 12^; 

 paraphyses incrassated upwards. (Plate III. fig. 11.) 



Peziza acetabulum — Linn., "Spec. Plant.," ii. 1650; 

 Bull., " Champ.," p. 267, t. 485, f. 4 ; Fries, " Sys. Myco.," 

 ii. 44 ; Sow., " Fung.," t. 59 ; " Eng. Flo." v. p. 187 ; Berk, 

 " Outl.," 362 ; Price, fig. 72 ; Cooke, " Handbk," No. 1964 ; 

 "Mycogr," fig. 183; Vitt, "Mang," t. 30, fig. 2; Kromb, 

 " Schw.," t. 61, f. 23-26 ; Pat, p. 70, £ 162. Fungoides 

 acetabuliforme — Vaill, "Bot," t. 13, f. 1. Acetabula 

 vulgaris — Fckl, "Symb. Myco," p. 330; Sacc, "Myco. 

 Ven. Sp," p. 168. Aleurea acetabulum — Gill, " Champ," 

 p. 36, c. i. 



Exs.— Fckl, "F. Eh," 1231, 2084; Cooke, "Fung. 

 Brit," i. 556, ii. 182; Babh, "Fung. Eur," 316; Phil, 

 " Elv. Brit," 6 ; Rav, " Fung. Am," 764 ; Roumg, " Fung. 

 Gal," 2275. 



On the ground in spring. Esculent. 



Cup 2 inches broad, 1 J inches high, externally floccoso- 

 furfuraceus, light umber, darker within, mouth con- 

 tracted, firm, tough, flesh not very thick ; stem \ an inch 

 high, smooth, deeply, but regularly costato-lacunose ; the 

 ribs branching at the top and forming reticulations on 

 the outside of the cup, so as to present the appearance of 

 a cluster of pillars supporting a font or roof, with fret- 

 work between them (" Eng. Flo."). 



External cells of the cup concatenate, with their free 

 extremities breaking up, so as to give a farinose appear- 

 ance to the surface (Dr. Cooke, I. c). 



