322 GYNANDR1A.— DIANDR1A. 



HAB. Woods and swamps. June. U . Leav^. 

 large, rod.; scape 6 — 10 in. high; fi. gr. -white. 



* Subgenus. MICROSTYLIS. 



Lip sessile and concave, erect, the summit truncat e 

 and bidentate; column minute; anthers 2; pollinia 3. 

 2. M. ophioglossoides : leaf solitary, ovate, amplexicaul ; 

 stem pentagonal. 



IIAB. Swamps. June. U . Stem a span high, 

 with 1 leaf; fl. minute, gr. -white. 



519. CORALLORHIZA. Dragon's claw. Orchideoz. 



1. C. verna : petals linear-lanceolate, spreading; lip 



oblong, without spots, bidentate at the base ; apex 

 recurved, ovate ; spur obsolete, adnate. 

 HAB. Sphagnous swamps. May. 2{. Leafless; 

 root coralloid ; scape 5 — 6 in. high; fl. small, 

 yellow-gr. 



2. C. odontorrhiza : lip oval, undivided, obtuse, spot- 



ted ; spur obsolete, adnate ; capsule subglobose. 

 HAB. Shady woods. Aug. — Sept. U . A foot 

 high, leafless, sheathed ; fl. purplish. 



3. C. multiflora : scape many-flowered (15 — 30) ; lip 



cuneate-oval, 3-parted, recurved, spotted ; spur 

 conspicuous, adnate. 



HAB. Shady woods. Aug. — Sept. Scape 12 — 15 

 in. high ; fl. purp. and spotted. 



520. APLECTRUM. Orchidea. 



A. hyemale. 

 HAB. Woods. May. %. Root bulb. ; leaf solit., 

 ovate, striate ; scape 12 in. high, vagin. ; fl. gr.' 

 purp. ; lip 3-cleft, not spotted. 



DIANDR1A. 



521. CYPRIPEDIUM. Ladies' slipper. Orchidex. 



1. C. candidum : stem leafy; leaves oblong-lanceo- 

 late ; lobe of the style lanceolate, rather obtuse ; 

 lip shorter than the lanceolate petals, compressed. 

 HAB. Pennsylvania. May. U . Fl. wh. Resem- 

 bles C. Calceolus, 



