ORCHIDACE. 
Epiphytic herbs, never terrestrial ; 
pseuodobulbs none :— 
Stem very short, leaves few, 
crowded, pendulous, broad, flat 
and softly coriaceous ; flowers in 
long, often branching, racemes ; 
lip with a long claw; midlobe 
2-lobulate ; lateral lobes. fimbri- 
ate; spur bent ‘ . 13., ORNITHOCHILUS. 
Stems more or less elongate ; leaves 
coriaceous, flat, or fleshy and 
terete :-— 
Lip not spurred ; leaves terete . 14. Luista. 
Lip spurred, adnate to the 
column or its foot; leaves flat, 
lorate :— 
Column with a long foot . 15. AiRIDEs. 
Column slightly produced into 
a foot :— 
Spur with neither calli nor 
septum within :— 
Spur compressed laterally, 
deep, pubescent at the 
mouth ; side-lobes of lip 
none . $ . 16. RHYNCHOSTYLIS4 
Spur not cone 
rarely (in Vanda) 
reduced to a gibbous 
swelling :— 
Side-lobes of lip usually 
large (small in Vanda 
Roxburghit), spur 
widely funnel-shaped, 
glabrous at the 
mouth; flowers usu- 
ally large (small in 
Vanda parviflora) 
caudicle of pollinia 
short and broad . 17. VANDA. 
