AN ENUMERATION OF CULTIVATED FERNS. 
275 
like. Sporangia subglobose, trilobed, vertically trivalve d, 
solitary in the axis of the bract-like leaves. 
Genus 158. — Portion of fertile frond, natural size; spore-case 
enlarged. No. 1 . 
1. P. triquetrum, Sw. ; Schlc. Fil. t. 165 b ; TIoolc. Gen. FiL 
t. 87 ; Lodd. Cab. t. 1916. Lycopodium nudum, 
IAnn. — Tropics and sub-tropical regions of both 
hemispheres. 
159. LYCOPODIUM, Linn. 
Stems rigid, erect or slender, flagelliform, pendulous or 
creeping ; leaves acerose, subulate or rusciform, distant or 
imbricate. Sporangia reniform, vertically bivalved, solitary in 
the axis of the leaves, or in terminal, rarely lateral, contracted, 
ament-like spikes. Spores numerous, small, uniform ( Antlieri - 
dangia only ?). 
