AN ENUMERATION OF CULTIVATED FERXS. 275 



like. Sporangia subglobose, -trilobed, vertically trivalved. 

 solitary in the axis of the bract-like leavea. 



Genus 158.— Portion of fatile frcnd, natural size; spore-case 

 enlarged. No. 1. 



P. triquetrum, Sw. ; Sehk. Fil. t 165 b ; Hook. Gen. Fil. 

 t. 87 ; Lodd. Cab. t. 191 6. Lycopodium nudum, 

 Linn. — 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, 

 oment-like spikes. Spores numerous, small, uniform (Antlieri- 

 dangia only ?), 



12 



