22 cat, orcHipem, (J. D. Hooker) ` [Plocoglottis, 
2. P. javanica, Blume Bijdr. 380, t. 21; Orchid. Archip. Ind. t. 14; 
Mus. Bot. i. 46; leaf solitary, bracts short ovate, raceme glabrous. Lindl. 
Gen. & Sp. Orchid. 182. 
Perak, alt. 3-1200 ft., Scortechini, King's Collector.—D1ISTRIB. Java. 
Leaf-blade 10-12 by 3-4 in., as long as the very slender petiole. Scape much 
longer than the leaf, very slender; raceme 8-10 in. ; bracts 3-} in., often recurved ; 
flowers 2 in. diam., pale yellow speckled with red ; dorsal sepal long, arched, nar- 
rowly lanceolate; lateral oblong-lanceolate, falcate, acute ; petals narrowly oblanceo- 
late, faleate ; lip broadly obovate, angles and tip rounded, acuminate or cuspidate ; 
spur a gibbosity.—A Plocoglottis from Malacca, Maingay, resembles this, but has a 
shorter raceme, and is described (by Maingay) as having obtuse sepals; the specimen 
is flowerless 
49. LUISIA, Gaud. 
Tufted epiphytes; stem terete, rigid, sheathed, pseudobulbs 0. Leaves 
elongate, terete, obtuse. Flowers drooping, small, spicate on a short or 
very stout erect axillary rachis ; bracts very short, thick, imbricating, per- 
sistent. Sepals subequal or the decurved dorsal smaller. Petals often 
longer, narrower. Lip sessile on the base of the column, base flat concave 
or saccate. Column very short, truncate; anther 2-celled ; pollinia 2, sub- 
globose, seated on a replicate short strap. Capsule narrow, erect.— Species 
about 15, tropical Asia to N. Caledonia. 
The materials at my disposal for the elucidation of this remarkable genus are, 
though considerable, far from being sufficient. Above all careful drawings for living 
plants should be obtained, when the following attempt at diagnosing the Indian 
species will want revision and probably correction. 
* Petals not much longer than the lateral sepals (most so in L. primulina). 
l. E. teretifolia, Gaud. Bot. Freyc. Voy. 497, t. 97 ; leaves 4-6 in, 
flowers small, lateral sepals subacute keel winged, petals linear-oblong 
obtuse hardly longer than the sepals, hypochile subquadrate saccate, ep! 
chile broadly cordate. Blume Rumph. i. +t. 194, £. 3, t. 197 D ; Mus. Bot. 
i. 63; Lindl. Fol. Orchid. 2 (excl. in all Syn. Ep. triste). L. burmanica, 
Lindl. Le L. brachystachys, var. flaveola, Par. & Reichb. f. in Trans. 
Linn. Soc. xxx. 144. L. platyglossa, Reichb. f. in Walp. Ann. vi. 622 
L. zeylanica, Lindl. l.c. Cymbidium triste, Roxb. Fl. Ind. iii. 461 (not of 
Willd.; Bot. Mag. t. 3648; Wight Ic. v. 11 (text, not Ic.) ; Griff. Notul. iii. 
340 (the Mergui plant). C. tenuifolium, Wight l. c. t. 1689 (Ic., not teat). 
SIKKIM HIMALAYA (Ic. Cathcart). The Kuasia MTs., at Churra (Je. Jerdon). 
BENGAL; in the Sunderbunds, Roxburgh. Prau and TENASSERIM, Griffith, &C. 
The WESTERN GHATS, from Canara to Travancore. CEYLON, Macrae, &c.— DISTRIB. 
Malay Islands to New Caledonia. 
Stem 6-12 in., stout ; internodes }-4 in, Leaves variable in thickness. Rachis 
of spike {-} in. Petals }—} in. long. Lip equalling or rather exceeding the sepals. 
Column very short. Capsule ł-1} in.—Blume erred in referring Willdenow’s 
Cymbidium triste to Gaudichaud’s Luisia teretifolia. The latter appears to accord 
with the Indian plant, aud Wight’s t. 1689 is very characteristic. Blume's t. 194 has 
larger flowers. A coloured drawing of Lindley’s burmanica by Griffith is excellent. 
The petals vary in length and form, but never much exceed the sepals. The lip is in 
five Indian drawings purple. Blume figures a purple hypochile and yellow epichile 
with purple disk. Roxburgh describes the lip as dark purple with yellow spots. 
Griffith figures it green with black purple blotches. Wight says, “ Flowers pale pink, 
lip conformable, afterwards purple.” In var. flaveola, Par. & R. f., the flowers 
are yellow, the hypochile purple and epichile streaked with purple. Lindley’s 
L. zeylanica (Macrae, 1829) is identical with the Peninsular species, but there nre 
along with it flowers of a different and a garden plant, which he referred to Vanda 
trichorhiza, Hook. Reichenbach’s ZL. brachystachys, founded on Wight's t. 1689, 1$ 
