ORCHIDE^E 137 



Spider-Orchis ; sepals yellow-green inside, lip broad, 

 convex, usually lobed, lateral petals oblong, nearly 

 glabrous ; open hill-sides, rare. O. fucifera, Sm. ; re- 

 sembling aranifera, but sepals pink, lateral petals downy 

 within, lip usually not lobed ; open hill-sides, rare. 



3. CHAM^ORCHIS, L. 



Sepals and petals connivent, forming a hood ; lip 

 3-lobed, not spurred, lobes entire, but with a blunt tooth 

 on each side of the lip ; tubers 2-3, undivided. 



C. alpina, Rich. (Ophrys alpina, L.) ; flowers small, 

 greenish-yellow, in a lax spike, stem about 4 in., leaves 

 linear, as long as the stem ; alpine pastures, local. 



4. ACERAS, Br. 



Sepals and petals connivent into a hood ; lip elongated, 

 4-lobed, not spurred; pollen-masses falling forwards. 

 Not alpine. 



A. anthropophora, Br., Man-Orchis; flowers small, 

 green, lip with two lateral and two terminal lobes; dry 

 pastures, chiefly calcareous, local. 



5. HERMINIUM, Br. 



Sepals and petals incurved ; flowers small, lip 3-lobed, 

 not spurred, leaves usually two. 



H. Monorchis, Br., Musk-Orchis; stem 4-6 in., flowers 

 very small, green, in a slender dense spike, fragrant at 

 night, leaves narrow, 2 radical and I stem-leaf; alpine 

 pastures, chiefly calcareous, local. 



