8 
CXXXVI. ORCHIDE^. 
distichous; racemes 
Stem elongate; leaves 
long, axillary 
Leafy stems usually elongate; scapes 
base very tall; flowers large 
Stems leafy, flattened ; flowers usually terminal 
III. Polystachy/e. Stems erect 
Flowers small. Sepals forming 
47. Dipodium 
from 
48. Grammatophyllum 
49. Bromheadia 
leafy. Raceme or panicle terminal, 
a mentum. Column with a foot 
50. Polystachya 
IV. Sarcanthe^e. Epiphytes, stems terete or flattened, often long. 
Leaves coriaceous distichous articulate with the sheaths. Racemes or 
panicles axillary. Pollinia 2 or 4 on a single caudicle. 
Lip spurless. 
No column foot. Lip entire. 
Leaves terete ..... 
Leaves lanceolate flat .... 
Column with a short foot; lip lobed; flowers 
large. 
Lip obscurely 3-lobed, no callus 
Lip distinctly 3-lobed, with callus. 
Stem long, callus not forked 
Stem short, callus forked 
Lip 5-lobed ...... 
Column foot long, lateral sepals adnate to it ; 
lip 3-lobed, side lobes erect; flowers 
medium. 
Stem short; leaves broad, callus forked . 
Stem tall; leaves narrower; callus not 
forked . . . . 
Lip spurred. 
Column footless. 
Flowers large, laxly racemed or panicled; 
column short. 
Midlobe of lip large .... 
Midlobe small; sepals and petals curved, 
spathulate ..... 
Midlobe small; sepals and petals lanceo¬ 
late acute ..... 
Column long slender; leaves terete 
Column short. 
Flowers small, solitary; lip 3- to 5-lobed 
often pubescent .... 
Flowers in dense racemes showy; lip 
entire, stem short 
Flowers small, solitary, racemed or 
panicled; lip 3-lobed with callus in 
the spur mouth; caudicle narrow . 
Flowers small solitary; leaves very close- 
set ; lip entire, no callus 
Leafless with numerous roots; stem very 
short ...... 
Flowers few medium; caudicle as broad as 
the large disc .... 
Column foot long. 
Spur horizontal ..... 
Spur small; stem short .... 
Flowers large; stem long.... 
Lip saccate not mobile. 
Stem elongate ; bracts flat distichous 
Stem short; bracts not distichous 
51. Luisia 
52. Adenoncos 
53. Acampe 
54. Stauropsis 
55. Phalaenopsis 
56. Staurochilus 
57. Kingiella 
58. Doritis 
59. Vanda 
60. Arachnis 
61. Renanthera 
62. Renantherella 
63. Trichoglottis 
64. Rhynchostylis 
65. Saccolabium 
66. Microsaccus 
67. T^niophyllum 
68. Pelatantheria 
69. Sarcochilus 
70. Ascochilus 
71. Aerides 
72. Thrixspermum 
73. Dendrocolla 
