SPERMATOPHYTA— ORCHIDACEAE 



393 



Fig. 173. Fig. 174. 



Fig. 173. Smaller Yellow Lady Slipper {Cyprit^edium parriflorum, var pubesceus). A 

 beautiful flower of early summer, seen in the woods of eastern Iowa. C. M. King. 



Fig. 174. Glands of several species of Moccasin flower, which are said to contain the 

 toxic substances. 1. Hair gland of Cypripcdium pubescens. 2. Hair gland of Cypripedium 

 hirsutum in water. 3. Hair gland of Cypripedium Calceolus in water. (Charlotte M. 

 King, after Nestler.) 



Distribution. In woods and thickets, chiefly east of central Iowa, and Min- 

 nesota to Nova Scotia ; occasionally in Colorado, Nebraska and Alabama. 



Cypripedium candidum Muhl. Small White Lady Slipper 



A slightly pubescent perennial; leaves lance-oblong, acute; petals and 

 sepals greenish, purple spotted; sepals ovate-lanceolate, lips white striped 

 with purple inside, flattened laterally, convex above. 



Distribution. In bogs and meadows from New York to Minnesota, Iowa, 

 Nebraska and Missouri. 



Cypripedium hirsutum Mill. Showy Lady Slipper 



A rather stout, downy perennial 2 feet or more high; leaves ovate pointed: 

 sepals round ovate, or orbicular, longer than the petals, which are obovate; 

 lip inflated, white, pink purple stripes. 



Distribution. In woods and swamps from Nova Scotia, Ontario and Geor- 

 gia west to Minnesota and Iowa. 



Poisonous Properties. Dr. Babcock, many years ago, found that the sev- 

 eral species of Lady's Slipper produced dermatitis. Years ago the writer 

 heard of a case of poisoning where a young man carried a large bunch of 



