260 ORCHIDS OF THE SIKKIM-HIMALAYA. 
bracts ‘5 in. long. Flowers three or four near the apex of the stem, "5 or “б in. long, 
brownish, nodding. Sepaline tube cylindric, glabrous, the mouth 3-lobed. Petals minute, 
sub-rotund, entire, inserted on the sepaline tube near the bases of two of its sinuses. Lip 
as long as the column but shorter than the sepaline tube, ovate-lanceolate, clawed, flat, 
with undulate-crenate edges and with four parallel thickened lines from the base to nearly 
the tip; claw short, and bearing two sub-globular calli. Column with winged sides, the 
apex truncate and 4-toothed; pollinia narrowly and obliquely ovoid. 
Sikkim, at elevations of about 7,000 feet; flowering in August; Pantling No. 293. 
The whole plant is of a pale dull brown colour, except the column and lip which 
are yellowish-white. The species is allied to С. ег із, Hook. fil, but that species has 
smaller flowers with fimbriate (or glandular) lateral petals and a lip with two long wing-like 
central lamelle. It is less closely allied to 6. orobanchoides, Benth, which has erect 
flowers and а ventricose sepaline tube. It agrees with 6. elata, Blume, in having two 
callosities on the claw of the lip. We have dedicated the species to Mr. W. T. Thiselton 
Dyer, F.R.S., C.M.G., C.I.E., Director of the Royal Gardens, Kew. 
PrarE 345.— Gastrodia Dyeriana, King and Pantling. Two plants, of natural size. Fig. 2 a flower, 
1 section of the same, showing the minute petals within the sinus of the sepaline tube, 3 the lip 
showing the callosities on its claw, 4 apex of ovary, column and lip, side view, 5 column with the 
anther in situ, 6 anther, 7 pollinia; ай enlarged. 
69. Didymoplexis, Griff. 
Terrestrial aphyllous herbs with tuber-like roots. Scape simple, bearing a scanty 
raceme of small flowers, the pedicels elongating in fruit. Sepals and petals cohering by 
their margins into a short tube, their apices alone free, the dorsal sepal and petals forming 
the upper 3-lobed lip, the lateral sepals forming the lower entire or bifid lip. Lip 
shorter than the perianth-tube, inserted on the very short foot of the column, rather broad, 
its dise studded with numerous minute calli. Column long, nearly straight, narrowly 
winged in the upper part and 3-toothed at the apex. Stigma broad. Anther 2-celled, 
depressed; pollinia 4, unequal, in pairs. Capsules elliptic, tumid, ridged, their pedicels 
accrescent and often reaching a length of six inches. Two species, one Indo-Malayan, 
the other Australasian. 
DIDYMOPLEXIS PALLENS, Griff. in Cale. Journ. Nat. Hist. IV, 389, t. 17. 
Root long, branching, moniliformly tuberous. Stem erect, 3 to 6 in. long, with 
one or two blunt sheaths about :2 in. long. Raceme 4- to 8-flowered. Flowers about 
435 in. long; floral bract triangular, much shorter than the gradually lengthening 
pedicel of the ovary; pedicel and ovary at first about “2 or :25 in. long, the former 
lengthening with the ripening of the fruit to as much as 6 inches. Dorsal sepal ovate, 
obtuse, concave; the lateral pair united to the middle, their free portions obtuse. 
Lip with a short curved claw, cuneately oblong, the apex truncate and minutely 
erose; the dise bearing an oblong thickening, studded, especially towards the base 
and apex, with minute granulations. Column nearly straight, winged in its upper 
third, the apex with three teeth; produced below into а very short foot, forming 
with the lateral sepals a short mentum. Pollen grains closely adherent to each other. 
Capsule ‘75 to 1 in. long, tumid. Kurz in Seem. Journ. Bot. 1866, 40 (excl. syn. 
