ORCHIDACEiE 



Anteriordi vision of the petals 

 longer than the posterior 



49. H. Schaffneri 



50. H. lactiflora 



var. huccalis 



51. H. clypeata 



52. H. entomaniha 



53. H.jaliscana 



54. H. diffitsa 

 Anterior division of the petals 



shorter than the posterior 

 division or subequal to it 



Raceme lax 



55. H.Jlexuosa 



5Q. H.felipensis 

 Raceme dense 57. H. guadalajarana 



•ft Petals simple, subauriculate on anterior basal 



jngle 58. H. subauriculata 



at 



[jfiT. virens^^^ 



**Labellum simple, or merely lobed or toothed, the 

 lateral lobes, if any, never filiform or linear 

 except in H. virens 

 t Petals bipartite 59. H. orizabensis 



j"t Petals simple or merely angled, or toothed on 

 the anterior basal angle or at the summit 

 Labellum rounded at base, not toothed 

 or angled 



Spur slender 



60. H. strkta 



61. H. eiistachya 

 Spur inflated 62. H. troyana 



1 H. virens, which has a trifid labellum, may be looked for here. It belongs, however, with 

 //. odontopetala and its allies. 



[ 19] 



