ORCHIDE^ 139 



long as ovary, stem 6-8 in., leafy, leaves linear-lanceo- 

 late, keeled ; pastures, frequent. G. odoratissima, Rich. 

 (PL 108); very fragrant, flowers pink, spur not longer 

 than ovary, leaves linear ; alpine pastures, frequent. 



9. CCELOGLOSSUM, Hartm. 



Sepals connivent into a hood ; lip 3-lobed or tridentate, 

 with a very short spur ; stigma depressed ; root-tubers 2 

 or more, lobed. 



C. albidum, Hartm. {Habenaria albida, Br., Gymna- 

 denia albida, Rich.); flowers small, greenish-white, in a 

 cylindrical spike, lip deeply 3-lobed, spur one-third as long 

 as ovary, stem 1-6 in., leafy, leaves broadly lanceolate, 

 root -tubers numerous, slender; pastures, frequent. C. 

 viride, Hartm. (Habenaria viridis, Br.), Frog Orchis ; 

 flowers yellowish -green tinged with brown, in a lax elon- 

 gated spike, lip with 3 teeth, spur very short, saccate, 

 leaves narrower, root-tubers 2. 



10. Platanthera, Rich. 



Flowers large, white, fragrant, in a lax spike; sepals 

 spreading; lip undivided, with a long spur; stigma de- 

 pressed ; root-tubers 2, lobed. 



P. bifolia, Rich. (Habenaria bifolia, Br.), Smaller But- 

 terfly-Orchis; flowers pure white, very fragrant, stem 

 6-8 in., with usually two often opposite ovate leaves, lip 

 linear, spur very slender, 1J-2 times as long as ovary; 

 thickets, frequent. P. chlorantha, Cust. {Habenaria chlo- 

 rantha, Bab., P. montana, Rchb.), Larger Butterfly Orchis ; 

 flowers larger, greenish - white, not so fragrant, spur 

 slightly swollen at the tip ; thickets. 



