ILLUSTRATED KEY 



XXXI 



Solitary rose-purple flower on a, bracted 

 stem; lip without sac or spur; column ad- 

 hering at its base to lip; anther attached to 

 column with two poUinia in each sac. 



yw^ 



V. Arethusa p. 78. 



A rare plant with fibrous roots and stout, 

 leafy stem. Flowers in a leafy bracted 

 raceme, with sepals and petals all separate 

 and nearly equal; no spur. Lip pinched in 

 at the middle. 



VI. Epipactis p. 82. 



Slender herbs with close-pressed white or 

 greenish white flowers arranged in one to 

 three rows on a stalk that is usually twisted; 

 leaves all at the base. Lip, without a spur, 

 but spreading, crisped and cut. 



VII. Gyrostachys 

 p. 87. 



