Polystachya.] cxxxvi. orchidejE. 153 
narrow falcate blunt, midlobe much longer, broad round retuse. 
Capsule narrow ellipsoid not reticulate, *36 in, long. Hab. Dind- 
ings, at Lumut. Lankawi, Kwah; Burau. Nangchik, Bukit Besar 
at 2500 ft. altitude (Annandale). Kedah, at Krau (Williams). 
51 . LUISIA, Gaud. 
Epiphytes; stems stiff. Leaves long terete. Flowers few, 
small in short, lateral spikes. Bracts very short, thick persistent. 
Sepals oblong. Petals oblong, often longer and narrower. Lip 
sessile on column base, side-lobes small, midlobe oblong or round, 
flat, spurless. Column very short. Anther 2-celled. Species 15, 
Indo-Malay, Polynesia. 
Petals little longer than sepals . . (1) L. brachystachys 
Petals much longer than sepals. 
Lip shorter than sepals . . . . {2) L. antennifera 
Lip longer than sepals . . , . . (3) L. tristis 
(1) L. brachystachys BL Rumfihia iv. 30; Rchb. fil. Xen. 
Orch. i. 204, t. 87, fig. 1; Ridl. Mat. i. 147. 
Stem stout, 3 in. long, -12 in. through. Leaves 4 to 6 in. long, 
blunt; sheaths *5 in. long. Raceme -25 in. long. Flowers 3 or 
4; pedicels and ovary *25 in. long. Upper sepal oblong, -12 in. 
long, laterals lanceolate. Petals lanceolate sub-acute, broad, little 
larger than sepals, all green edged pink. Lip oblong-ovate blunt 
entire, dark crimson. Column short crimson, arms round and 
blunt. Capsule -75 in. long. Hab. Lankawi isles (Curtis). Adang 
isles, Pulau Rawei. Perils, Bukit Lagi. Distrib. India, Siam. 
(2) L. antennifera BL Rumfihia iv. 50; Rchb. fil. Xen. Orch. 
i. 265. /. 78, fig. 2 ; Ridl. Mat. i. 148. 
Stem 2 ft. tall. Leaves blunt, 4 to 5 in. long, sheaths *5 to 
1 in. long. Racemes stout, *5 to 1 in. long. Flowers *5 in. wide. 
Sepals sub-acute. Petals longer, narrow linear, base broader, all 
greenish. Lip shorter oblong-ovate purple. Column thick purple. 
Anther flat oblong yellow. Capsule 1*5 in. long. Hab. On low 
trees. Pahang, Pulau Chengei, Pahang River. Negri Sembilan 
near Port Dickson (Williams). Perak, Kurau (Scortechini); 
Batang Padang (Kunstler). Distrib. Java, Borneo. 
(3) L. tristis Hook. fil. F.B.I. vi. 25; Ridl. Mat. i. 148. 
Stem long and stout. Leaves 4 to 5 in. long, sheaths 75 in. long. 
Raceme 1 to 2 in. long. Flowers 3 or more. Upper sepal oblong 
blunt hooded, *5 in. long, laterals oblique triangular-lanceolate 
acute, densely pink spotted. Petals linear, base broad, twice as 
long, white tipped pink. Lip longer than sepals, base oblong, 
limb ovate-cordate blunt purple. Hab. Rare. Negri Sembilan, 
Port Dickson (Williams). Penang, Penara Bukit (Curtis). Distrib. 
New Caledonia. 
*1 
