298 SYSTEMATIC BOTANY. 



C. PULCHELLUS (Grass Pink}. Scape slender, i-leaved, several-flow- 

 ered, arising from a solid bulb ; leaf linear, grass-like, veiny, sheathing the 

 base of the scape ; flowers large, bright reddish-purple, fragrant, 2-4 in num- 

 ber ; bracts minute ; lip concave, dilated at summit, bearded inside. In 

 meadows and bogs, 8 '-12' high. July. 



7. Spiranthes. Flowers somewhat ringent, in a mostly spiral 

 spike. Upper sepal cohering with the petals. Lip oblong, con- 

 cave, tapering at base, and furnished with 2 callous processes. Col- 

 umn arching, clavate, on a short, oblique pedicel. Stigma beaked, 

 at length 2-cleft. Pollen-masses 2, composed of scarcely cohering 

 grains. 



1. S. GRACILIS (Slender Ladies' 1 Tresses). Scape very slender, smooth ; 

 leaves all radical, ovate, or oval-lanceolate, petiolate ; flowers small, pearly 

 white, arranged in a single row, which usually winds spirally round the axis ; 

 bracts ovate, acute ; lip narrow-obovate, crisped at the summit. In dry fields, 

 6'-i2' high. July-August. 



2. S. CERNUA (Ladies' Tresses). Stem rather stout, pubescent above ; 

 radical leaves linear-lanceolate ; flowers whitish or cream-color, crowded in 

 a dense spike, fragrant, somewhat pubescent ; bracts ovate-lanceolate ; lip 

 oblong, dilated and crisped at apex. In wet ground, j'-is' high. August- 

 October. 



8. Goodyera. Flowers ringent. Upper sepal cohering with the 

 petals, vaulted. Lower sepals situated beneath the lip, which is sessile. 

 Column straight. Pollen-masses 2, composed of angular grains. 



G. PUBESCENS (Rattlesnake Plantain). Scape pubescent ; leaves all radi- 

 cal, in tufts, ovate, petiolate, dark green, veined and blotched with white ; 

 flowers small, greenish white, like the scape glandular-pubescent, arranged 

 in a dense spike ; the roundish, inflated lip ovate, ending in an abrupt point. 

 In rich woods, 6'-i2 ; high. July-August. 



9. Cypripedium. Sepals spreading ; the 2 lower or forward ones 

 united into I below the lip, rarely distinct. Petals alike. Lip a 

 large, inflated, obtuse sac. Column 3-lobed ; lateral lobes anther- 

 bearing. 



1. C. PARVIFLORUM ( Yellow Lady's Slipper}. Stem leafy, pubescent; 

 leaves oval, acuminate, strongly parallel- veined, pubescent ; flowers large, 

 mostly solitary ; sepals ovate, or ovate-lanceolate ; petals elongated, green- 

 ish, striped and spotted with brownish purple ; lip large, inflated, yellow, 

 spotted inside. In moist, rich woods, io'-2o' high. May- June. 



2. C. ACAULE (Lady's Slipper}. Acaulescent ; stem naked, 2-leaved at 

 base, i-flowered ; leaves oval or oblong, acute, strongly veined, pubescent ; 

 flower large, bracted ; sepals oblong-lanceolate ; petals linear ; lip depend- 

 ent, purple, reticulate, longer than the petals, opening by a fissure on the 

 upper side ; middle lobe of the column rhomboidal, acuminate, deflexed . In 

 moist, and especially in evergreen woods, 6'-i2 f high. May-June. 



