140 OUR NATIVE ORCHIDS 



There is no true spur, but a sac or protuberance joined to the 

 tip of the ovary. 



2. SMALL-FLOWERED CORALROOT 



Corallorhiza odontorhiza (Willd.) Nutt. (Plate LIIL, Fig. 2.) 



The slender purplish scape of this, perhaps the most 

 insignificant of all our orchids, is from six to fifteen inches 

 high and has from six to twenty minute flowers. They are 

 seldom more than a quarter of an inch in length, but under 

 the magnifying glass they show as bravely as do some of the 

 Habenarias. The lip, which is not more than two lines 

 long, is slightly notched or toothed upon its broadly ovate 

 edge. It is whitish and is marked with purple lines con- 

 verging toward the throat and ornamented with a few spots. 



The smallness of the flowers and their distinct pedicels, 

 as well as the bracts that are visible beneath them, dis- 

 tinguish this Coralroot from the Early Coralroot, and the 

 drooping habit of the flowers in the raceme distinguish it 

 from all others whose flowers stand erect. 



It grows in woods from Massachusetts to Michigan, 

 and is found in Florida. It reaches the 3,000-foot level in 

 North Carolina. It blooms in July and September. 



3. WISTEr's CORALROOT 



Corallorhiza Wisteriana Conrad. (Plate LIIL, Fig. i.) 



This Coralroot, described by Conrad in the Journal 

 of the Academy in Philadelphia, in the year 1829, must be 

 distinctly American. 



