246 Journal of Mycology [Vol. 13 



DivisioIII. SCHIZOMYCETAENaeg. 1857. 



' Ordo I. Schyzomycales (Naeg. 1857) em. nom. 

 Fam. I. Myxobacteriaceae Thaxt. 1892 

 " II. Beggiatoaceae Mig. 1894 

 " III. Chlamydobacteriaceae Mig. 1894 

 " IV. Spirillaceae (Colin 1872) Mig. 1894 

 " V. Bacteriaceae Zopf 1883 

 " VI. Coccaceae Zopf 1883. 



NORTH AMERICAN SPECIES OF AGARICACEAE. 



A. P. MORGAN. 



THE MELANOSPORAE. (Continued). 

 {^Continued from page 153). 



V. PSILOCYBE Fries, Syst. Myc. I, 182 1. 



Pileus fleshy, convex or campamilate, smooth and glabrous, 

 the margin at first incurved. Stipe subcartilaginous, tough and 

 flexile or rigid, fistulous and stuffed or hollow, exceptionally 

 solid, usually smooth and glabrous. Lamellae adnexed or adnate, 

 becoming purple or brozvn; spores in mass purplish-brown or 

 purplish-black, sometimes brown. 



Growing on old trunks or mostly on tlie ground in fields and 

 woods. Passing easily into Psathyra on the one hand and not 

 sharply distinguished from Hypholoma on the other. 



I. SPADICEAE. Pileus fleshy but thin, hygrophanous, 

 brownish zvhcn moist, and iisually striatulate, expallent in drying; 

 veil none. Stipe slender, rigid, glabrous or silky fibrillose. 



a. Lamellae broad. 



I. PSILOCYBE CORNEIPES Fries, Mon. Hym. Suec. 

 II. 1863. Icons. Sel. 136. 



Pileus submembranaceous, campanulate then convex, smooth 

 and glabrous, hygrophanous, when wet bay, when dry ochraceous, 

 the margin striate. Stipe slender, horny rigid, smooth and shin- 

 ing, fistulous, bay or blackish. Lamellae very broad, subdistant, 

 adnate, at first whitish then clouded with brown from the spores. 



Growing in dense wet woods ; Pacific Coast Cat. Pileus 1-2.5 

 cm. in diameter ; stipe 4-6 cm. long, 2-3 mm. thick. A species 

 remarkably distinct on account of having a stipe like that of 

 Mycena cohacrens. 



