58 



A SYNOPSIS OF THE VEGETABLE KINGDOM. 



Spiranthes. 



LlSTERA. 



PONTHIEVA. 



cultivated s p e c i es 

 bearing Ivs. Some 

 species are leafless 

 saprophytes: (l'«Hi(- 

 Icw) fr. a flesliy pod: 

 labelluin united witli 



tlie column 11. Vanilla. 



BB. Labellum with a distinct 

 hypochil often spurred. 

 (Ci'phalantherew.) .... 

 c. IJypochilium concave, 

 lahellum with a dis- 

 tinct mentum, in- 

 cluded 12. Cephalantheka. 



CC. Labellum without a 



mentum, exserted. . . 13. Epipactis. 

 AA. Anthers equalling the rostel- 

 lum : removal of the viscid 

 glands leaves a well de- 

 fined furrow in the rostel- 



lum 



B. PoUinia waxy or powdery 

 not divided into many 



small masses 



c. Labellum reflexed. 



(Spiranihew.) 



D. The dorsal sepal and 

 petals galeate, but 

 not united : inflor- 

 escence spiral. ... 1 

 DD. The sepals and petals 

 spreading : Ivs. op- 

 posite ^ 



CC. Labellum erect (Cion- 

 ichiiU'tr) : lateral sep- 

 als not forming a 

 mentum : 1 a b e I 1 um 

 and petals Inserted 

 on the prolonged col- 

 umn 1 



BB. Pollinla divided into 

 many small masses. 



if'liysurew.) 



c. Labellum spurred or 



saccate 



D. Claw of the label- 

 lum concave above 

 the spur, constrict- 

 ed, limb spreading 



or recurved 17. Phtsukus. 



DD. Claw of the labellum 

 long, fimbriate on 

 the margin, limb '2- 



lobed 18. ANfECTOCHiLns. 



CC. Labellum not spurred 

 or saccate or at 

 least the short sac 

 not projecting be- 

 yond the sepals 



D. C o 1 u m n short, 

 straight : fls. open- 

 ing symmetrically. 

 E. Labellum unlike the 

 petals, sessile or 

 adnate, concave 

 not p a p i I 1 o se 

 within, often 



hairy 19. Goodteba. 



EE. Labellum unlike the 

 petals, c la w e d 

 ventricose, often 

 papillose within ; 

 claw entire : stig- 

 ma 1 20. Dossinia. 



DD. Column short, twist- 

 ed : fls. opening 

 a s y m m e t rically, 

 dorsal sepal plane 



or nearly so 



E. Column with 2 per- 

 p e n d i c u lar ap- 

 pendages in front.21. Macodes. 

 EB. Column without ap- 

 pendages 22. H.EMAHIA. 



4. Thonia Tkibb. 



A. stems leafy, not thickened : 



labellum mostly spurred. 2.1. Thunia. 

 AA. Stems short, slender, 2-lvd. : 

 lateral sepals forming a 

 mentum with the column. 24. Trichosma. 



5. C.ELOGTNB TEIBB. 



A. Column slender, base of the 



labellum not ventricose. . 



b. Lvs. evergreen, and 



pseudobulbs perennial.. 25. C.elogyne. 

 BB. Lvs. and pseudobulbs an- 

 nual 2(1. Pleione. 



AA. Column short, 1-wlnged : 

 labellum ventricose at the 



base 27. Pholidota. 



AAA. Column rather short, 2- 

 winged : labellum plane 

 at the base 28. Platvclinis. 



G. LiPARIS TRIBE. 



A. Leafy plants 



B. Labellum not saccate 



C. Anthers erect, decidu- 

 ous : locules dehiscing 



above. 29. Microstylis. 



CC. Anthers inclined, decid- 

 uous 30. LiPABIS. 



BB. Labellum saccate 31. Calypso. 



AA. Leafless saprophytes 32. Corallorhiza. 



7. POLYSTACHYA TRIBE. 



A. Labellum spurred 



B. Plants 1-lvd 33. Tipularia. 



BB. Plants leafy : lvs. jointed 



at the base. 34. Galeandra. 



AA. Labellum not spurred : tu- 

 bers wanting : lateral sep- 

 als decurrent on the foot 



of the column 



B. Column short S."). Poly.stachya. 



BB. Column long 36. Ansellia. 



8. L.ELI A Tribe. 



A. The lateral sepals forming 

 a mentum witli the foot of 

 the column, or the base 

 of the labellum slightly 



saccate 



b. Labellum free from the 



column, sigmoid 37. IsocHiLns. 



BB. Labellum free, not sig- 

 moid : pollinla 8 : 

 pseudobulbs present. ..38. Ccelia. 

 BBB. Labellum, united to the 

 column, forming a short 



tube or basin 



c. Young shoots formed 

 near the summit of 

 the old pseudobulb. .39. Hexisea. 

 CC. Young shoots from the 

 the base of the old 

 pseudobulbs : stem 1- 



Ivd 



D. Fls. numerous in a 



spike 40. Abpophylldm. 



DD. Fls. few in a short 



raceme 41. Haktwegia, 



AA. The foot of the column 

 wanting: labellum en- 

 veloping the column, or 



adnate 



B. rollinia 4 



c. Labellum more or less 

 adnate to the column, 



blade spreading 42. Epidendrum. 



(See also 43. Brodgh- 

 cc. Lalieiium free; disc tonia.) 



with 2 hollow horns, 

 ccc. Labellum free. mostly44. Diacrium. 

 enveloping the col- 

 umn, without horns. 4.'). Cattleya. 



BB. Pollinla 8 



c. Stigma in a hollow in 

 the front of the col- 

 umn 



D. The labellum gradual- 

 ly expanding from 



the Iiase 



B. Sepals and petals 

 plane: labellum 

 enveloping the 



column 46. LiBLIA, 



EB. Sepals and petals 

 more or less 



