Orchidaceas 



55 



Flowers not spirally arranged. 



Glands surrounded by a thin membrane. 



Coeloglossum. 



Glands naked. Limnorchis. 



Flowers spirally arranged. Ibidium. 



Cypripedium 



passerinum 



Rich. 



Small White 



Lady's 



Slipper. 



Stem 8-10 inches high from 

 a decumbent base, leafy, hairy 

 throughout. Leaves 4 or 5, 

 lanceolate, acuminate, veiny, 3-4 

 inches long, yellowish-green, and 

 clasping at the base. Flowers solitary, small ; 

 lip obovate, inflated half an inch long, white, 

 spotted with purple inside, particularly near 

 the base; sepals greenish, shorter than the 

 lip, the upper forming a sort of hood; the 

 lateral petals white, oblong-lanceolate, 

 obtuse, half an inch long, spreading. 



In damp shaded situations, frequent in the 

 Rockies; flowers in July. 



Cypripedium 

 parviflorum 



Salisb. 

 Small Yel- 

 low Lady's 

 Slipper. 



Stem 1-2 feet high, slender, and 

 leafy. Leaves elliptic or lanceo- 

 late, 2-6 inches long, 1-2 1 inches 

 wide, yellowish-green, veiny, 

 scatteringly hairy. Flowers 



