0B0HID9 OP THE SIKKISf-HIMALAYA.
Bessilc, subtended by n few scarious sheathing bracts. Flowers sparsely pubescent, -1 in.
long; Jloral h-act small, scaiious, much sliorter Üian the ovary. Sepals sub-equal, ovatelanceolate,
acute, spreading. Petals broadly lanceolate, acute. Lip narrowly spatliulate,
the claw with undulate edges, the apex clavate; the upper surface with two raised lines
from base to apex, granular near the apex. Colu7nn short, deeply bilobed, each lobe with
a stigmatic sm-face on its inner face ; the anther lying in the sinus between tiie lohes
and on a lower level than the two stigmatic sui-faces (? distinct stigmas); foot much
longer and narrower than the column, and forming with the base of the Hp a long narrow
somewhat curved sac; pollinia eight, clavately ellipsoid, attached to a large membrane
and that in turn to a cordate gland. Capsule elHpsoid, -2 in. long. Rcichb. fil. in Walp.
Ann. VI, 470; Hook. fil. PI. Br. Ind. V, 825. Áppendicula, teres, Griff. Notul in, 359;
Ic. PI. Asiat,, t. 339.
Sikkim, in the valley of the Teesta at an elevation of 1,000 feet; Pantling
No. 239; in flower duiing May and June. Upper Assam ; Griffith, Watt. lihasia Hills;
J . D. Hooker.
The flowers are white, the end of the lip alone being yellow. The stnicture of
the column is very remarkable. It is divided into two lobes by a deep sinus at the
bottom of which lies the antlier, the pollinia being quite concealed, while the gland
(although visible in front) does not project from the cleft between the lohes. The two
halves of the stigma lie on the inner or opposing surfaces of the lobes of the column.
Each is of an obovate acute shape (the broad ends being uppermost); and the two lower
and acute ends join in the sinus between the lobes, and thus forming a narrow belt
from which the gland connecting the pollinia is derived.
PLATE Z2^.—CeratosUjlis Urcs, Eeichb. ñl. A plamt, of natural size. Fig. 1 side view of a flower,
2 Bide view of floral bract, ovary, column and lip, 3 froat view of colimm and its foot {tha ovary being
behind), sbowing the two lobes of the column with the two afcigmatio sui-faces (marked s) and of the
anther, (the gland of the pollinia being marked ff), 4 inner surface of on® of the lohes of the column,
fftoe (mM'ked s), 5 the lip, 6 anther, 7 pollinia; (i¿¡ enlarged.
62. Appendicula, Blume.
Stems tufted, slender, leafy, often compressed. Leaves numerous, uniform, flat.
Inflorescence terminal or leaf-opposed, short. Flowers in racemes spikes or heads, minute;
Jloral hract persistent. Sepals connivent, the lateral pair connate at the base and adnate
to the long foot of the column to form a mentmn. Petals linear, elliptic-oblong or
obovate. Lip erect, adnate to the foot and sometimes to the sides of the column.
Column veiy short ; rostellum erect, bifid. Antlter dorsal, erect ; pollinia eight, (four
often imperfect), attached by fours to a slender elongate caudicle and small gland,
minute. Species about forty; tropical Asiatic, Australian and
Appendicula bifaeia. Lindi, in Hook. Kew Journ. Bot. VII (1855), 35.
Stems slender, unbranched, 10 to 24 in. long. Leaves lanceolate, sub-acute, minutely
bilobulate at the apes and often apiculate between the lobules ; the base sessile and
jointed to the short sheath; length '9 to 1-25 in., breadth -35 to -4 in, Racemcs chiefly
terminal, rarely leaf-opposed, half an inch long, or shorter, 6- to 8-flowered. Flowers '15
THELASIS. 249
to '25 in. long; Jloral Iract knceolatc, acuminate, longer than the ovary, ultimately
reflexed. Sepals oblong, obtuse. Petals ovate. Lip as long as the sepals, narrowly
oblong, blunt, fleshy, its upper siu'face with a superposed horso-shoe-shaped appendage
slightly constricted beyond the middle and with a globose callus near its apex. Column
long, its apex with two pointed obliquely tnmcate or bifid processes as long as the
rostellum; pollinia eight, unequal, clavate, attached by fours to a single caudiclo ; gland
minute, brown. Capsule tui'gidly ellipsoid, -25 in. long. Hook. fil. Fl. Br. Ind. VI, 82 ;
Benth. Fl. Hong-Kong, 358; Reichb. iil. in Walp. Ann. VI, 893. A. reduplieata, Reichb.
fil. Ot. Hamb., 45.
Sikkim, in tropical valleys; in flower during August; Pantling No. 288. Cachar;
Keenan. Tenassoi-im; Heifer, No. 5221 (Kew Distrib.). Peruk; Scortcchini, No. 1866.
Pahang; Ridley, No. 2370.
The flowers are white flushed with yellow, the gland of tho pollen-masses is brovra.
The lip is veiy cuiious and gives the idea that a second lip, i-athcr smaller than the real
one, is laid on top of the latter. This no doubt was the origin of Reichenbuch's specific
name ?
PLATE 330.—Jppendicida bifaria, Lindl. A plimt, of natural size. Fig. 1 a flower, 2 floral hract,
ovary, column with anther in situ, and lip, side view, 3 lip, showing the globose sub-npical cnllus and the
superposed laminar process, 4 vertical section of the lip, 5 column and its foot, at tho apes tho two
processes and between thom the rostellum, 6 uuder sui'face of anther, 7 pollinia; all enlarged.
63. Thelasis, Blume.
Epiphytes, with small few-leaved pseudo-bulbs or with short corapresscd stems and
equitant leaf-sheaths. Leaves narrowly oblong, flat or loriform. Inflorescence from the
base of the pseudo-bulb, sparsely sheathed. Flowers invea-ted, minute, in spikes, their
texture cellular. Sepals connivent, sub-equal, concave, keeled or winged. Petals narrow,
membranous. Lip sessile on tho base of the column, ovate or oblong, erect. Column very
short, with no foot; tho rostellum terminal, large. Anther dorsal, elongate, erect, 8-celled;
pollinia eight, minute, globose, attached by granular clastic thi'eads to tlie slender
caudicle; gland long, linear. Capsule small, turgid. Species about 14, in tropical Asia
and in the islands of the Pacific.
Leaves 1 to 3 in. long, lip with side lohes 1. T. pygmma.
Loaves 4 to 6 in. long, lip with no side lobes 2. T. hngifoUa.
1. Thelasis piGiiiEi, Lindl. in Joiu-n. Linn. Soc. IH, 63.
Pseiido-hulbs ovoid-globose, -4 to '65 in. in diam., bearing at the apex one or two
linear-oblong fleshy leaves, minutely and obliquely bifid at the apex, narrowed at the
sessile base ; 1 to 3 in. long and -2 to '45 in. broad. Scape longer than the leaves, rising
from tho base of the pseudo-bulb, sheathed at the base and at intervals above; raceme
from *5 to 1 iu. long. Flotvers crowded, "1 in. long; Jloral Iract ovate, acuminate, as long
as the ovaiy, ecaiious, persistent. Dorsal sepal ovate-lanceolate, acute; the lateral paiiliueaa'
obloug, concave, keeled. Petals oblong, blunt, 1-nerved, their apices recxu-ved. Lip
somewlmt shorter than the sepals, oblong, blunt; the lateral lobes shallow, broad. Column
tapering to the apex; tho rostellum long, minutely bifid. Anther dorsal; pollinia globose,
resting on a large mass of granular elastic tissue; caudicle single, slender; gland linear.
ANN. ROY. BOT. QABD., CALCUTTA, VOL, VIIL