202 ORCHIDS OF THE SIKKIM-HIMALAYA. 
The flowers of this species are pale green throughout. It is distinguished by its 
entire lip from all the Indian species of Luisa. Plants of it were sent in 1893 to 
the Botanic Garden, Calcutta, by the late Mr. C. A. B. Anderson. These flowered 
during the year 1896, Nobody else has as yet collected it, 
PLATE 269.— Luisia indivisa, King and Pantling. А plant; of natural: size, Fig. 1 a flower, 
2 floral bract, ovary, column and lip, 3 the petals, 4 lip, 5. column with anther and stigma; ай 
enlarged. 
2, LUISIA TRICHORHIZA, Blume Mus. Bot. Lugd. Bat. I, 63. 
Stem 4 to 10 in. long, very stout, not branching. Leaves fleshy, only slightly 
tapered to the apex, 9 in. thick and 4 to 7 in. long, the internodes ‘4 in. long. 
Spikes 4- or 5-flowered, stout. Flowers `4 in. long; floral bract broad, with an acuminate 
point, persistent. Sepals unequal; the lateral pair obliquely ovate, acute, keeled, longer 
than the blunt oblong dorsal one. Petals oblong, blunt, longer.and narrower than the 
lateral sepals, all spreading. Jip larger than the sepals, the basal half deeply concave 
and with erect rounded edges, the apical half broadly cordate, tapering to the subtruncate 
minutely emarginate apex, the upper surface with short blunt vertical ridges. Column 
half as long as the lip, stout; the anther sub-quadrate, compressed, rostellum broad. 
Pollinia ovoid, attached by a broad tapering caudicle to the cuneate-quadrate gland. 
Lindl. Fol. Orch. 2; Reichb. fil. Xen. Orch., t. 77, figs. 8 to 18; Hook. fil. Fl. Br. 
Ind. VI, 23. Vanda? trichorhiza, Hook. Exot. Fl, Vol. I, t. 72. 
Sikkim, at low elevations; in flower during March and April; Pantling, No. 205. 
Gharwal; Falconer. 
This has much stouter stems and thicker aad blunter leaves than either Г. brachy- 
stachys or L. teretifolia. The flowers also are produced on short thick tubercles, and they 
are larger than in these -two . species. .In colour they approach most to those of the 
former, the sepals being pale green with faint purple lines, and the lip dark dull purple, 
the basal portion or hypochile -being faintly outlined by pale green lines, and the ridges 
of the apical half (epiehyle) being tinged with the same shade of green. 
РгАТЕ. 270.— Luisia trichorhiza, Blume. А plant; of natural візе. Fig. 1 the sepals and petals, 
separated; of natural size, 2 a flower, З bract, ovary, column with anther in situ, and lip in profile, 
4 column (with the bases of the perianth) showing the anther in situ and the stigma, 5 lower 
surface of anther, 6 pollinia ; all gu 
3. LUISIA TERETIOLIA, Gaud. Bot. Freye. Voy., 426, t. 37. 
Stem 6 to 12 in. long, stout, sometimes branching. Leaves terete, spreading, 9. 5 
to 6 in. long, and from ·15 to 2 in. thick, the тейен ods “6 in. long. Spikes very 
short, “2 to ‘3 in. long, 2- or 3-flowered. Flowers “95 in. long; floral bract broad, pointed. 
Sepals and petals sub-equal, the petals slightly longer, narrowly oblong, blunt, spreading, 
the lateral pair ending in a tooth. Lip longer than the sepals and much broader, with 
a square sub-saccate base, and a deflexed rhomboid apical lobe with five or six vertical 
lines’ on its upper surface and a subtruncate apex. Column less than half as long as the 
lip, stout. Anther depressed. Pollinia 2, ovoid, attached by a stout caudicle to a ied 
oblong gland. ‘Blume ‘Rumphia, IV, t. 194, fig. 3, t. 1970; Mus. Bot. Lugd. Bat. 
63; Lindl, Fol Orch., 2 (excluding from all the synonym Ер. t-ist2); Hook, fil Fl. s 
A 
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