ORCHIDEiE. 199 



Aplectrum. Nutt. 18. 1. 

 A. hyemale. Nutt. Adam and Eve. A singular plant with 

 a single leaf sheathed, and bearing a few flowers towards the sum- 

 mit. The form of the flower originates the popular name. In 

 shady, wet woods in the valleys of Berkshire County ; flowers in 

 June. 



Arethusa. L. 18. 1. 



A. bulbosa. L. Bulbous Arethusa. The 5 divisions of the 

 floral envelope are united at the base, and the lip is attached to 

 the base of the column. This species is 6-10 inches high, with 

 a sheathed stem, and 1, rarely 2, large purple flowers at the sum- 

 mit ; lip curled and crenate ; root bulbous ; swamps ; May. 



Triphora. Nutt. 18. 1. 



T. pendula. Nutt. Taken from the preceding, and has the 

 5 segments distinct, equal, and approaching ; often grows in clus- 

 ters, 4 inches high, w T ith 6 or 7 short, clasping leaves ; flowers 3 

 or 4, pale-purple ; root tuberous ; at roots of trees ; September. 



Pogonia. Brown. 18. 1. 



From the Greek for beard, on account of its fringed lip ; a 

 North American genus of few, but handsome species. 



P. ophioglossoides. R. Br. Snake-mouthed Arethusa, from 

 which genus it was taken ; stem nearly a foot high, with a single 

 flow T er, nodding and pale-purple, and one oval-lanceolate leaf, and 

 a leafy bract near the flower ; lip fimbriate ; swamps ; July. The 

 flower resembles a snake's head, whence its specific name. 



P. verticillata. Nutt. Whorled Arethusa. Stem about a 

 foot high, with 5 whorled, oblong-lanceolate leaves, near the 

 solitary and terminal flower, of which the 3 outer segments are 

 long and linear ; swamps ; June. 



Calopogon. Brown. 18. 1. 

 Named from the Greek for beautiful beard, as the lip is beauti- 



