GYNANDRIA MONANDRIA. 423 



355. GOODYERA. 



G. pubescens : radical leaves ovate, petiolate, reticulate ; scape sheath- 

 ed, and with the flowers pubescent ; lip ovate, acuminate ; petals 

 ovate. 



HAB. Woods. July August, 1]. ; leaves radical, dark green with 

 white veins ; flower white. 



356. NEOTTIA. Ladies' tresses. 



N. tortilis : radical leaves linear ; scape sheathed ; flowers spirally 

 secund ; lip somewhat 3-lobed, the middle lobe larger and crenu- 

 late. 



HAB. Meadows and woods. July, 7|. ; scape slender, 1 2 inches high ; 

 floioer num., white ; root fascic. 



b. gracilis : radical leaves ovate, caducous, mernbranaceous. 



HAB. Dry woods. Scape very slender, smooth. 



N. cernua : leaves linear-lanceolate, nerved ; stem sheathed ; spike 

 densely flowered ; flowers recurved-drooping ; lip oblong, entire, 

 acute. 



HAB. Boggy grounds. Aug. Oct. 7J.; stem 8 inches high, pubes- 

 cent above ; flower greenish-white. 



357. LISTER A. Tway-blade. 



L. cordata : stem with only 2 opposite roundish-cordate leaves ; raceme 

 loose column without an appendage behind ; lip elongate, 2-toothed 

 at base, deeply bifid ; the segments subdivaricate and acute. 



HAB. Sphagnous swamps. May, 1|. ; stem 4 8 inches high ; ra- 

 ceme 7 \b-flowered ; flower minute, gr. -purple. 



358. POGONIA. 



P. ophioglossoides : root fibrous ; scape furnished with an oval-lanceo- 

 late leaf and a foliaceous bract near the flower ; lip fimbriate. 



HAB. Swamps. July, Tj-5 root fascic.: scape I foot high ; flower 

 solitary, large, purple. 



P. verticillata : leaves 5, oblong-lanceolate, verticillate ; flower solita- 

 ry ; the three exterior petals very long, linear ; interior shorter, ob- 

 long, obtuse ; lip 3-lobed, middle segment undulate. 



HAB. Swamps. July, Ij.; stem 8 12 inches high; leaves term.' 

 exterior pet. greenish-brown. 



359. CALOPOGON. 



C. pulchellus : radical leaves ensiform; scape few-flowered. 

 HAB. Swamps. July, 7|_; stem 1 foot high; flower ? 4, largt 

 purple ; root bulb. 



37 



