Calcar filiforme. 
1. aequale i. e. non inflation. 
21. O. qitadripunctata Ten. 
2. basi inflation. 
22. 0. anatolica Boiss. 
p. Folia linearia v. lineari-lanceolata. 
Calcar teres cylindraceum. 
23. 0. laxiflora Lam. 
Calcar conicum. 
24. 0. parvifolia Chaub. 
Caulis sub antliesi fistulosus. (Latifoliae.) 
Folia angustata spicam attingentia v. basin 
superantia. 25. 0. incarnata L. 
Folia medio latissima oblongo-lanceolata. 
Calcar cylindraceum amplum. 
26. 0. latifolia L. 
Calcar gracile curvatum. 
27. 0. psendosambucina Ten- 
Calcar cylindraceo-conicum. 
28. 0. sambucina L. 
Caulis sub antliesi solidus. 
29. 0. metadata L. 
III. Integrilabia. (Amer. boreal.) 
Sepala petalaque in galeam conglutinata, labelling 
tegrum. 30. 0. spectabilis L. 
IV. Chusuae. (Indicae.) 
Labellum integrum v. obscure trilobum, scapus m° n0 * 
phyllus. 
f Labellum trilobum. 
Folia linearia 1—2. 31. O. Chusita Don. 
Folium 1 oblongum. 
longe petiolatum. 
scapurn aequans. 32. 0. spathulata Behb. /• 
ffLabellum sub simplex v. obscure trilobum. 
33. 0. Stracheyi Hook, t- 
