HABENARIA. ] ORCHIDACE&. 221 



Petals entire ; lip 3 -partite or lobed 



Side-lobes of lip pctaloid, truncate, much 

 wider than the narrow linear midlobe ; 

 flowers white : 



Side-lobes of lip pectinate to the middle ; 

 petals small ; spur slender, twice as 

 long as the ovary or longer . . 2. H. Susannce. 



Side-lobes of flabelliforrn lip not pecti- 

 nate : 



Stem leafy upwards ; spur slender, twice 



as long as the ovar^ . . . 3. H. longifolia. 



Leaves all radical ; spur equalling or 



longer than the ovary . . . 4. H. plantaginea. 



Petals entire; lip 3-partite, the side-lobes 

 very narrow and usually filiform : 



Spur filiform, fusiform or Tong ~clavate, as 

 long as or longer than the ovary : 



Anther-tubes long : 



Leaves distinctly pale-margined ; spur 

 usually much longer than the ovary, 

 funnel-shaped at the mouth and cla- 

 vate at the apex . . . . 5. H. commelinifolia. 



Leaves not margined ; spur about as long 



as the ovary . . . . . 6. H. pubescens. 



.Anther- tubes short : 

 Leaves three or more : 



Leaves not margined ; flowers green . 7. H. furcifera. 



Leaves pale- margined ; flowers 



yellow . . . . . 8. H. marginata. 

 Leaves two, radical, orbicular, cordate, 



margined ; spur shorter than ovary . 9. H. diphylla. 



;Spur small, globose ellipsoid or shortly 

 tlavate, much shorter than the ovary : 



Leaves narrowly lanceolate or elliptic ; 

 flower small, white tinged with yellow 

 and green ^ tubers glabrous . . . 10. H. Lawii. 



