ORCHIDEiE 143 



woods, frequent. E. rubiginosa, Crntz. (atrorubens, Sch.) ; 

 flowers purple, smaller, scented, terminal lobe of lip 

 pointed, recurved, protuberance at the base wrinkled, 

 stem more slender ; thickets, especially calcareous, local. 

 E. microphylla, Sw. ; plant more slender, stem 8-18 in., 

 leaves much smaller, flowers fragrant, lip gibbous at the 

 base ; mountain woods ; Western Switzerland, rare. E. 

 palustris, Crntz. ; flowers few, large, variegated with 

 white, green, and purple, terminal lobe of lip blunt, 

 rounded; bogs; Switzerland, Jura, Dauphiny, Pyrenees, 

 rare. 



21. Cephalanthera, Rich. 



Flowers large, white or red, in few-flowered bracteate 

 spikes; ovary twisted; sepals and petals incurved; lip 

 saccate ; pollen-masses 2, powdery ; rostellum o ; stem 

 leafy; capsule erect; root-stock creeping. 



C. grandiflora, Gray {Jiallens, Rich.); flowers large 

 (f in.), white, distant, bracts longer than the ovary, leaves 

 ovate, acuminate, stem 12-24 i°-j thickets, occasional. 

 C. ensifolia, Rich, {xiphophyllum, Rchb.) ; flowers white, 

 smaller, distant, bracts -much shorter than the ovary, 

 leaves lanceolate, the upper ones linear; bushy places, 

 rare. C. rubra, Rich. ; flowers red-putple, ovary pubes- 

 cent, bracts longer than ovary, leaves lanceolate, acute, 

 stem 6-18 in.; bushy places, especially calcareous, local. 



22. Cypripedium, L. 



Flowers very large, usually few ; sepals and petals 

 spreading ; lip very large, inflated, not spurred ; stamens 

 2 (i in all the other genera); rostellum o; stem leafy; 

 root-stock creeping. 



