Lissochilus. | CXXXIII. ORCHIDEX (ROLFE). 
+tPetals 3 lin. or more broad. 
Disc with three crenulate keels or lamelle. 
Western species. 
Lip subpandurate or rhomboid-oblong. 
Spur conical-saccate, 24 lin. long . 14, L. lindleyanus, 
Spur “cupulate, rounded,” minute . 15. L. platypterus. 
Lip 3-lobed ` 5 S . 16. L. Bouliawongo. 
Eastern or Central African species, 
Bracts subobtuse 5 S S . 17. L. paludicolus, 
Bracts acute or apiculate. S . 18. L. latus. 
Dise of lip densely villous-scabridulous 19, L. Wilsoni. 
*Sepals ligulate to elliptical-oblong, not distinctly 
broadest towards the apex, 
Keels of lip crested. 
Spur broadly conical . . e 20. L., Millsoni. 
Spur narrowly conical. 
Inner pair of keels gibbous at the base 21. L. purpuratus. 
Inner pair of keels semicircular and slender 
at the base 5 e . 22, EL Heudelotii. 
Keels of lip thickened or daa: but not ES 
Keels of lip flexuose . 23. L. malangensis. 
Keels of lip straight. 
Keels of lips thickened a to the FAS 
Lip trifid . S . 24, L. fallax. 
Lip pandurate. 
Keels of lip about seven . . 25. L. livingstonianus, 
Keels of lip about three . 26. L. affinis. 
Keels of lip obscure or thickened only at 
the base. 
Spur over 4 as long as the lip. - 27. L. cornigerus. 
Spur scarcely } as long as the lip . 28. L. mediocris. 
Petals broadly ovate-orbicular or orbicular-elliptical 
(see also 18. L. latus). 
*Front lobe of lip usually flat or nearly so ; petals 
white or purple. 
Bracts subulate-lanceolate, acuminate. 
Disc of lip with a pair of calli in front of the spur. 
Leaves elongate-linear. 
Calli of lip obovate or oblong . . 29, L. arenarius, 
Calli of lip linear . : . 30. L. Roscheri. 
Leaves lanceolate or E E 
Calli of dise quadrate. 
Sepals acuminate . S dE dilectus. ; 
Sepals subacute S 292. L. Monteiroi. 
Calli of dise styliform- capitate . 33. L. stylites. ` 
Disc of lip without calli. g . 34. L. Buettner. 
Bracts ovate or broad. 
Upper part of spur long and narrow or acute. 
Bracts and sepals acuminate. S 
Keels of lip rather dwarf and slender . 35. L. Horsfallii. 
Keels of lip elevated into tall crenulate 
lamelle. 
Spur acuminate . ° S S 36. 
Spur acute ; : : oot. 
Bracts and sepals obtuse or ‘apiculate. 
L. porphyroglossus, 
L, Sandersoni. 
