cealed by tubular sheaths which waste away into fibres 
except in the leafy upper portion, below producing scat- 
tered roots which are fibrous, stout, apparently short, 
mostly simple and densely tomentose (especially when 
young). Leaves several, on the upper portion of the 
stem, congested when young and scattered at maturity, 
distichous, convolute, elliptic to oblong-elliptic or ellip- 
tic-lanceolate, acuminate, cuneate below, sessile or in- 
distinctly petioled, articulated to close tubular sheaths, 
membranaceous, with three to five nerves more promi- 
nently exserted beneath, 5.6—-13.5 cm. long, about 2-2.5 
cm. wide, increasing in size from the lowermost leaves 
up to the median ones. Inflorescences much surpassing 
the leaves, arising from the axil of an upper leaf, erect 
or nearly so, racemose above, up to about 33.5 cm. long; 
peduncle about 21.4 cm. long, provided with several re- 
mote sheaths which are tubular below and lanceolate- 
acuminate above; raceme loosely about 15-flowered or 
less; floral bracts oblong, acute, spreading, up to 1.4c¢m. 
long. Flowers medium-sized, with campanulate-spread- 
ing segments, subfleshy. Dorsal sepal ovate-oblong, 
complicate-acute or mucronate, concave, 5-nerved, with 
the margins (especially above) very minutely cellular- 
erose, about 1.82 cm. long and 6 mm. wide. Lateral 
sepals similar, ovate-oblong, acute, cymbiform, dorsally 
carinate with the keel produced into a conspicuous mucro, 
5- or 6-nerved, lightly oblique, about 1.45 cm. long and 
7 mm. wide near the concave base. Petals elliptic-ovate, 
acute, apiculate, 5-nerved, about 1.2 em. long and 6 mm. 
wide. Lip simple, arcuate-recurved and parallel to the 
column with the sides erect in natural position, articu- 
lated to the column-foot, nearly equaling the lateral 
sepals, with the anterior margins strongly undulate, about 
1 cm. long and 6 mm. wide when expanded; disc when 
forcibly expanded ovate-oblong, cordate at the base, 
[151 ] 
