174 MEDICINAL AND POISONOUS PLANTS 



Fig. 166. — Club-moss (Lycopodium clavatutn, 

 Club-moss Family, Lycopodiacetv) . 1, 

 plant in "fruit." ^, spore-case, with the 

 scale-like leaf which bears it. 3, Spores, 

 highly n:iagnified. (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. 



Fig. 167.— Sweet-flag (Acorus Caknnus, Arum Family. Arac€(p). A, plant 

 in flower, much reduced. B, flower-cluster, natural size. C, flower, 

 with perianth spread, t. D, floral diagram. E, ovary, cut vertically, Y, 

 F, ovule, much enlarged. (Lucrssen.) — Perennial herb about 60 cm. 

 tall; flowers greenish; fruit fleshy, reddish. Native to North America 

 and Europe, 



