19 



of the valley are quite marked. Besides these the prominent symp- 

 toms to be looked for in cases of poisoning are, at first, diminished, then 

 infrequent and irregular heart action, and finally death from paralysis 

 of the heart. No special antidote is known. The general treatment 

 should be like that which would be adopted 

 for digitalis poisoning, but varied according 

 to the minor symptoms produced. 



Fig. 5.— Showy lady's slipper (Cypri- 

 pedium recjinae), one- third natural size. 



Fig. 6.— Larger yellow lady's slipper (Cypri 

 pedium Mrsutum), one-third natural size. 



ORCHID FAMILY (ORCHLDACEAE). 



LADY'S SLIPPERS. 



Cyjjrijpedium. 



Other names: Moccasin flower 5 ducks (Pa.); whip-poor-will shoes 

 (8. Y.). 



Perennial plants with large, conspicuously parallel- veined and plaited 

 leaves, and one or a few large, irregular pink and white or yellow flow- 

 ers. The following species may be readily recognized : 



SHOWY LADY'S SLIPPER. 

 Cyprijpedium reginae Walt. 



Other names : Whip-poor-will shoes (Conn.),- nerve root (New Bruns- 

 wick); female nervine. (Fig. 5.) 



Description and habitat. — A robust, somewhat hairy plant, 1 to 2 feet 



