THELASIS. | 249 
to “25 in. long; floral bract lanceolate, acuminate, longer than the ovary, ultimately 
reflexed. “ Sepals oblong, obtuse. Petals ovate. Lip as long as the sepals, narrowly 
oblong, blunt, fleshy, its upper surface with a superposed horse-shoe-shaped appendage 
slightly constricted beyond the middle and with a globose callus near its apex. Column 
long, its apex with two pointed obliquely truncate or bifid processes as long as the 
rostellum ; pollinia eight, unequal, clavate, attached by fours to a single caudicle; gland 
minute, brown. Capsule turgidly ellipsoid, “95 in..long. Hook. fil Fl. Br. Ind. VI, 82; 
Benth. Fl. Hong-Kong, 358; Reichb. fil. in Walp. Ann. VI, 893. A. reduplicata, Reichb. 
fil. Ot. Hamb., 45. | 
Sikkim, in tropical valleys; in flower during August; Pantling No. 288. Сасһаг; 
Keenan. Tenasserim; Helfer, No. 5221 (Kew Distrib.). Perak; Scortechini, No. 1866. 
. Pahang; Ridley, No. 2370. 
The flowers are white flushed with yellow, the gland of the pollen-masses is brown. 
The lip is very curious and gives the idea that a second lip, rather smaller than the real 
one, is laid on top of the latter. This no doubt was the origin of Reichenbach’s specific 
name reduplicata, 
Prate 830.—Appendicula bifaria, Lindl, А plant, of natural size. Fig. 1 a flower, 2 floral bract, 
ovary, column with anther in sifu, and lip, side view, 8 lip, showing the globose sub-apical callus and the. 
superposed laminar process, 4 vertical section of the lip, 5 column and its foot, at the apex the two 
processes and between them the rostellum, 6 under surface of anther, 7 pollinia; ай enlarged. 
63. Thelasis, Blume. 
Epiphytes, with small few-leaved pseudo-bulbs or with short compressed stems and 
6 quitant leaf-sheaths. Leaves narrowly oblong, flat or loriform, Inflorescence from the 
base of the pseudo-bulb, sparsely sheathed. Flowers inverted, minute, in spikes, their 
texture cellular. Sepals connivent, sub-equal, concave, keeled or winged. Petals narrow, 
membranous. Lip sessile on the base of the column, ovate or oblong, erect. Column very 
short, with no foot; the rostellum terminal, large. Anther dorsal, elongate, erect, 8-celled; 
pollinia eight, minute, globose, attached by granular elastic threads to the 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 lobes. . . . . . . 1. T. pygmea. 
Leaves 4 to 6 in. long, lip with no side lobes . . . . . 2. T. longifolia. 
1. Turrasms Рувмжа, Lindl. in Journ. Linn. Soc. ІП, 63. 
Pseudo-bulbs 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 the base of the pseudo-bulb, sheathed at the base and at intervals above; raceme 
from “5 to 1 in. long. Flowers crowded, ‘1 in. long; floral bract ovate, acuminate, as long 
as the ovary, scarious, persistent. Dorsal sepal ovate-lanceolate, acute; the lateral pair 
linear-oblong, concave, keeled. Petals oblong, blunt, l-nerved, their apices recurved. Lip 
somewhat shorter than the sepals, oblong, blunt; the lateral lobes shallow, broad. Column 
tapering to the apex; the rostellum long, minutely bifid. Anther dorsal; pollinia globose, 
resting on a large mass of granular elastic tissue; caudicle single, slender; gland linear, 
Axx. Roy. Bor. Garp., CALCUTTA, Vor. VIII. 
