ILLUSTRATED KEY 



XXXIU 



Low herbs from a solid bulb with a pair of 

 troad, shining leaves at base of flower stalk. 

 Sepals and petals nearly equal, linear and 

 spreading. 



Bog herb with coralloid roots; single, purple, 

 pink, and yellow blossom, with a large split, 

 bearded lip. 



XI. 



Leptorchis 



p. 12^. 



XII. Calypso p. 130. 



^oot parasites with large coralloid branching 

 roots. Small, inconspicuous, dull flowers in a 

 ■slender raceme. Leaves all reduced to sheath- 

 ing scales. Sepals and petals nearly equal. 



XIII. CORALLOEHIZA 



p- 133- 



