340 CLASS XX. ORDER I. 



concave, spreading, ascending ; anther resembling a 

 lid. 



361. Arethusa. Corolla five petalled, somewhat 

 ringent ; lip without a spur ; anther resembling a lid, 

 persistent. 



362. Cymbidium. Corolla five petalled, erect or 

 spreading ; lip concave at base, without a spur ; an- 

 ther resembling a lid, deciduous. 



363. CoRALLORHizA. Petals five, equal and conni- 

 vent ; lip mostly prolonged at base ; style free ; pollen 

 masses four, oblique. 



Order II. DIANDRTA. Two stamens. 



364. Cypripedium. Corolla four petalled, spread- 

 ing; lip inflated, hollow; capsule three valved, one 

 celled, many seeded. 



Order III. HEXANDRIA. Six stamens. 



365. Aristolochia. Corolla monopetalous, tubular, 

 crooked, with a swelling base and unequal border ; 

 capsule inferior, six celled. 



GYNANDRIA. 

 MONANDRIA. 



357. ORCHIS. 

 Orchis blephariglottis. Willd. Fringed white Orchis.. 



Lip lanceolate, ciliate, as long as the upper petal ; 

 spur longer than the germ. 

 St/n. Habenaria blephariglottis. Br. 



This very delicate species resembles 0. ciliaris in its habit, 

 and would be difficult of distinction but for its color. Spike 

 rather short with snow white flowers. Germs slender, longer 



