FLORA OF THE SUNDRIBUNS. 
273 
47- 
48, 
(45) Leaves opposite ; flowers regular or nearly so • *4^ 
Leaves alternate or leaf solitary ; flowers irregular 
(Orchids) • . . . . . . • 
Juices milky ; non-parasitic , , , . • >49 
Juices watery ; parasitic ...... 50 
Hoy a. 
49. Corolla medium, rotate ; flowers in stalked umbels J14 
Corolla^ small, urceolate ; flowers in axillary fascicles 
/7j. Dischidia, 
50. (48) Leaves usually broad, penninerved ; flowers herma- 
phrodite ...... I S4> Loranthus, 
Leaves rather narrow, 3-nerved from the base ; flowers 
I -sexual , , . . . 755. Viscum. 
51. (47) Leaf solitary at apex of a rounded pseudobulb . 52 
Leaves more than one, on a usually elongated stem . S 3 
52. Flowers in umbels ; lateral sepals under the lip, longer than 
the dorsal . , . . .181, Cirrhopetalum, 
Flowers solitary; sepals all equal, spreading .. 182, Trias, 
53. {51) Leaves terete . . . . . ~ . *54 
Leaves flattened or compressed , . . . >35 
54. Lip not spurred ...... 183. Luisia. 
Lip spurred ..... 185, Sarcanthus. 
55- (53) Leaves flattened with an upper and a lower surface or, 
if laterally compressed and equitant, with sheath about 
as long as blade and flowers axillary . , . • 
Leaves compressed, equitant, sheath shorter than blade ; 
and flowers many, minute, in a narrow raceme lyg. Oberonia. 
Stems not tufted, roots few, large, issuing at intervals 
from side of stem, leaves flat or channeled, coriaceous; 
lip spurred . . . . . . > * 57 
Stems tufted ; roots many, clustered at base ; leaves flat, 
thin ; or short, equitant, and fleshy ; lip with only a short 
mentum . . . - _ • ^8o. Dendrobium, 
57. Spur of the lip partially occluded . . . . *58 
Spur of the lip with neither occluding calli nor a 
septum within .... 184. Saccolabium, 
58. Spur occluded by calli but with no septum 186. Cleisostoma . 
Spur partially occluded by calli and with besides a verticaV 
antero-perterior -septum dividing it into two lateral 
■ chambers . . . . . 185, Sarcanthus, 
59. (44) Plants climbing by means of tendrils . . , do 
Plants without tendrils . . . , , > 
60. Tendrils forming part of a leaf . . , . ,61 
Tendrils not forming part of a leaf . , , dy 
56- 
