(421) 
This is Psathyra in the Sylloge. It is quite possible that 
Fayod’s separation should be recognized, but it seems unwise 
to attempt segregations until the structure of our American 
species is better known. Pannucta Karst. is probably a 
good genus, but no American species have been reported. 
48. DECONICA (W. G. Sm.) Sacc. Syll. Fung. 5: 1058. 
1887. 
Agaricus § Deconica W. G. Sm. Jour. Bot. 8: 1870. 
Putrescent: pileus fleshy, the margin at first incurved: 
lamellae decurrent: spores purplish-brown or dark fuscous: 
veil none: stipe central, slender, tubular, with a cartilaginous 
cortex. 
Type, D. coprophila (Bull.) Sacc. loc. cet. 
Used in the same sense as in the Sy/loge except that the 
species with a veil must be sought under Velzfrons in the 
Cryptophylli. 
49. PSILOCYBE (Fries) Quél. Champ. Jura Vosg. 116. 
1872. 
Putrescent: pileus thin but fleshy, the margin at first in- 
curved: lamellae adnexed or adnate: spores purplish-brown 
or dark fuscous: veil none: stipe central, slender, tubular, 
with a cartilaginous cortex. 
Type, P. cernua (Vahl.) Quél. (Syll. 5: 1053.) 
Taken in the same sense as in the Sydloge. 
so. MYCENA (Pers.) Roussel, Fl. Calvados ed. 2. 64. 
1806. 
Bolbitius Fries, Epicr. Myc.253(metonym). 1838. Type, 
B. vitellinus (Pers.) Fries. (Syll. 5: 1074.) 
Putrescent: pileus fleshy or submembranons: lamellae 
free or attached, deliquescent: spores ochraceous, ferrugi- 
nous or cinnamon: veil none: stipe central, slender, tubular, 
with a cartilaginous cortex. 
Type, Bolbitius conocephalus (Bull.) Fries. (Syll. 5: 
1075.) 
This is a most unfortunate shifting of names. The genus 
