174. MEDICINAL AND POISONOUS PLANTS 
Fic. 166.—Club-moss (Lycopodium clavatum, 
Club-moss Family, Lycopodiacee). 1, 
plant in ‘“‘fruit.’’ 2, spore-case, with the 
scale-like leaf which bearsit. 3, spores, 
highly magnified. (Wossidlo.)—A creep- 
ing evergreen with somewhat moss-like 
leaves, and stem attaining a length of 
1 m. or more; spore-bearing cones yel- 
lowish; spores sulphur-yellow. Native 
home, Northern America and Eurasia. 
Fic. 167.—Sweet-flag (Acorus Calamus, Arum Family, Araceew). A, plant 
in flower, much reduced. 8B, flower-cluster, natural size. C, flower, 
with perianth spread, ¢. D, floral diagram. £, ovary, cut vertically, ¥, 
F, ovule, much enlarged. (Luerssen.)—Perennial herb about 60 cm. 
tall; flowers greenish; fruit fleshy, reddish. Native to North America 
and Europe. 
