WOOTON AND STANDLEY FLORA OF NEW MEXICO. 149 



KEY TO THE GENERA. 



Anthers 2; lip a large inflated sack 1. Oypripedium (p. 149). 



Anthers only one; lip various in diffesrent genera. 



Flowers solitarj', scapose 2. Cytherea (p. 150). 



Flowers several, racemose or spicate. 



Plants without green leaves; stems glandular- 

 pubescent 3. CORALLORHIZA (p. 150). 



Plants with green leaves; stems not glandular 

 (except in Peramium), \isually glabrous. 



Leaves rosu late; stems very short 4. Peramium (p. 150). 



Leaves not rosulate, scattered along the 

 stems; stems 10 cm. long or more. 

 Leaves 1 or 2. 



Leaves 1, elliptic to oval; racemes 

 many-flowered; flowers ma- 

 roon or green 5. Achroa^thes (p. 151). 



Leaves 2, opposite, reniform; ra- 

 cemes laxly few-flowered; 



flowers gi-eenish 6. Ophrys (p. 152). 



Leaves several. 



Inflorescence loosely racemose; 

 flowers few, large, 25 to 35 



mm. long; capsules reflexed. 7. Epipactis (p. 152). 

 Inflorescence spicate, strict; flowers 

 numerous, small, 10 to 18 

 mm. long; capsules erect. 

 Spikes twisted; spur wanting.. 10. Ibidium (p. 154). 

 Spikes not twisted; spur 

 present. 

 Lip bifid; bracts of in- 

 florescence very 



conspicuous 8. Coeloglossum (p. 152). 



Lip entire; bracts of in- 

 florescence usually 

 not very conspicu- 

 ous 9. LiMNORCHIS (p. 152). 



1. CYPRIPEDIUM L. Lady's-.slipper. 



Broad-leaved plants arising from thickened fascicled roots; flowers usually solitary, 

 on long peduncles, showy, bright yellow, with purple spots on the sa'ccate lower petal. 



1. Cypripedium veganum Cockerell & Barker, Proc. Bjol. Soc. Washington 14: 

 178. 1901. 



Type locality: Sapello Canyon, Las Vegas Range, New Mexico. 



Range: Mountains of northern New Mexico and southern Colorado. 



New Mexico: Santa Fe and Las Vegas mountains; Mogollon Mountains; Cloudcroft. 

 Damp woods, in the Canadian and Hudsonian zones. 



The dried specimens from New Mexico agree with Colorado material collected by 

 Baker and by Coulter and referred to C. pubescens Willd., but these are slightly 

 different from C. pubescens material from the Eastern States. It is likely that the plant 

 of the Rocky Mountains is C. veganum. 



The specimen in the National Museum deposited by Pi-ofessor Cockerell disagrees 

 with his description in two particulars: neither leaves nor stems are glabrous, but both 



