ISAEIACEI. 551 



1648. Pachnocybe gzisea. Berh. " Grey Pachnocybe." 



Densely gregarious, abbreviated ; stem blackish ; heads glo- 

 bose ; spores grey. — Berk. Eng. Fl. v. p. 334. Periconia discolor, 

 Corcla. iii./. 38. B. ^' Br. Ann. N.H. no. 495*. 



On dead herbaceous stems. 



Stem dark, nearly black, composed of fibres not a line Mgh, head greyish, 

 at length dusky, spores elliptic. — Etig. Fl. 



1649. Pachnocy'be acicula. BerTi, "Needle-shaped 



Pachnocybe." 



Gregarious ; stem white or palhd ; head sub-globose ; spores 



elliptic. — Eng.Fl. v. p. 334. 



On dead herbaceous stems. 



Mycelium obsolete. Scarcely a line high, gregarious, but rather scattered, 

 pure white, or with the slightest possible pallid tinge on the stem. Stem 

 splitting UD into fibres ; receptacle sub-globose, covered with minute elliptic 

 spores. — Eng. Fl. 



1650. Pachnocybe albida. Berl. "Whitish Pachnocybe." 



Gregarious, pure white, clavato, spores large, oval (oval- 

 oblong. Fr.) — Eng. Fl. v. p. 335. Sporocyhe albida, Fr. S.M. 

 ill. p. 14. Berk. exs. no. 52, 



On rotten wood. 



Not aline high. Gregarious, but rather scattered, white 5 stem marked 

 with cells like the leaves of a Hypmi/m, filiform at the base, confluent with 

 the strongly clavate apex, which is sometimes forked. Spores scattered on 

 the receptacles large, oval, transparent. — Eng. FL 



