322 Class XX. Order I. 



inches long and three in thickness. The flowers are more than 

 twice the size of O. ftmbriata, paler, and very different in the 

 form of the lip, which has a very large middle segment with a 

 part of its fringe always bent inwards. Its lower leaves also are 

 very obtuse. It differs also from O. incisa, which is a small 

 flowering species, and from O. fssa, with large cleft flowers, of 

 which I have specimens from the Allegany mountains. 



332. NEOTTIA. 



Subgenus SPIRANTHES. Spike twisted, pollen granular. 

 * NEOTTIA GRACILIS. Slender Neottia. 



N. foliis radicalibus ovatis ; scapo vaginato, Jioribus 

 spiraliter secundis ; labello obovato, crispo. 



Leaves radical, ovate ; scape sheathing ; flowers in 

 a spiral row ; lip obovate, curled. 



Root fascicled. Leaves radical, on short petioles, ovate, 

 acute, nerved, caducous. Scape erect, slender, eight to twelve 

 laches high with a few sheathing scales or leafets. Flowers 

 white in a twisted spike. Bractes closely applied to the germ, 

 ovate, acuminate. Germs obovate. Petals linear, crystalline, 

 parallel, the three upper ones cohering. Lip obovate-spatulate, 

 curled, its base swelling with the lateral petals connected before 

 it. Anther parallel to the style. In dry, hilly woods. July. 

 Perennial. 



The leaves falling off frequently cause the plant to appear 

 leafless at the time of flowering. 



Variety /3. secunda. Spike unilateral, hardly twisted ; flowers 

 more slender. Perhaps a different species. In Conway, New- 

 Hampshire. July. 



NEOTTIA CERNUA. Willd. Drooping Neottia. Ladies' Traces. 



Leaves lanceolate, three nerved ; stem sheathed ; 

 flowers recurved-droopiug ; lip oblong, entire, acute. 

 Willd. 

 Syn. OPHRTS CERNUA. L. 



This plant is also distinguished, like several others of its genus, 

 by the spiral arrangement of its flowers. Lower leaves very 

 long, linear-lanceolate, nerved. Stem round, somewhat fleshy,, 



