Epidendrem.]  OXLVI. oRcHIDEXZ. (J. D. Hooker.) | 669 
tellum, sessile or stipitate. Anther posticous. Pollinia granular.— 
Terrestrial herbs. 
KEY TO THE GENERA. 
TrisE I. Bpidendree. 
Subtribe 1. MarAxEx (and LiPARIDEE, Gen. PL). 
1. OpERontAa.  Epiphytie. Leaves distichous, fleshy, laterally compressed, 
nerveless, Flowers very minute, in cylindric spikes or racemes; column very 
short. 
2. MīcrostYLIS. Terrestrial. Leaves membranous, base sheathing. Flowers 
small. Column very short. 
3. LiPARIS. Terrestrial or epiphytic. Leaves membranous or coriaceous, base 
sheathing. Flowers small or medium-sized. Column long. 
. 4. PLATYCLINIS. Epiphytie; pseudobulb 1-leaved. Flowers small; bracts 
rigid, glumaceous, ribbed, margins convolute. Column long or short with long or 
short membranous side arms. 
5. TIPULARIA. Terrestrial; pseudobulb 1-leaved. Lip with a long spur. 
1 6. OnEoncuis. Terrestrial, l-leaved. Sepals and petals suberect. Column 
ong. 
7. CORALLORHIZA. Leafless. Root coralloid. Sepals and petals suberect. 
Column long. 
Subtribe 2. DENDROBIEA. 
* Inflorescence lateral on a leafy or leafless stem, or terminal, or from 
the top of a 1-2-leaved pseudobulb. 
8. DENDROBIUM. Lip adnate to the produced foot of the column, contracted at 
the base or clawed, base erect and incumbent on the column, not mobile. 
** Inflorescence distinct from the pseudobulb. 
9. BULBOPRYLLUM. Racemes or spikes elongate, rdrely 1-fld. or umbelliform. 
Sepals usually subequal, free. Lip jointed on the foot of the column and mobile. 
10. Sunipta. Characters of Bulbophyllum, but anther turned away from the 
rostellum and dehiscing upwards. Flower spicate, coriaceous, concealed by the 
concave bracts, 
ll. Crrrnoperatum. Flowers umbellate. Lateral sepals longer than the dorsal, 
ced under the mobile lip or connate. . 
| 12. Trias. Scape 1-fld. Sepals spreading equally. Anther produced into a 
ong appendage. Very small herbs, pseudobulbs 1-leaved. 
13. DRYMODA, Scape 1-fld. Lateral sepals far removed from the dorsal. 
Pollinia connate in pairs.  Pseudobulb small, 1-leaved ; leaf caducous. 
14. Monomerta. Raceme long, lax-fld.; flowers large. Lateral sepals broad, 
far removed from the dorsal.  Pseudobulb 1-leaved; leaf narrow, petioled, 
coriaceous, 
pla 
P 15. DexpRoonrLCM. Flowers small, racemose. Sepals equal spreading. 
seudobulb 0, or on a rigid creeping stem ; leaf narrow. 
. 16. Panisga. Scape slender, few-fld. Sepals subequal. Lip very narrow, 
with a long sigmoid claw Pollinia 4, distinct. Pseudobulb narrow, crowded, 
l-leaved, . d 
, 17. ÅCROCHÆNE. Scape loosely many-fld. Mentum saccate. Petals fimbriate. 
indeed on th ini lobose, connected by a granular 
appendage, e base of the column. Pollinia 2, globose, 
