plete at the base in our specimen); peduncle mostly con- 
cealed by three or more imbricating sheaths which are 
loose, scarious and apparently finely maculate; raceme 
rather densely many- (20-) flowered, about 8.5 cm. long. 
Floral bracts narrowly lanceolate, scarious, concave, 
about equaling the pedicellate ovary. Flowers vivid yel- 
low, waxy, with spreading segments, rather large for the 
genus. Sepals with strongly revolute margins. Dorsal 
sepal narrowly lanceolate-oblong, obtuse or subacute, 
about 1.8-1.95 em. long and 5.5—-7 mm. wide. Lateral 
sepals much larger than the dorsal sepal, very obliquely 
triangular-ovate and falcate-decurved, acute, about 2 em. 
long measured along the posterior part and 1.3-1.5 cm. 
wide near the base, forming a prominent mentum with 
the column-foot, dorsally carinate above the middle. 
Petals oblong-lanceolate, obtuse or abruptly acute, 
lightly oblique, about 1.7 em. long and 4.5-5.5 mm. 
wide. Lip attached to the foot of the column near its 
apex, 8-lobed near the front, tubular-concave with erect- 
incurved lateral lobes in natural position, suborbicular in 
outline when expanded, about 1.8 em. long in the mid- 
dle and subequally wide or wider when expanded; lateral 
lobes semiobovate (including the basal portion), termi- 
nating in a truncate crenulate apex (without a free por- 
tion); mid-lobe porrect, subquadrate or ovate-subquad- 
rate, broader than long, retuse to rounded in front, about 
5 mm. long and 8.1 mm. wide; dise adorned with a 
broad central oblong apically lobulate callus and with 
numerous verrucose fleshy lines above the nerves. Col- 
umn very short and stout, about 6 mm. long, produced 
into an elongate foot about 1 cm. or more in length. 
This species appears to lack any close allies. Superfi- 
cially it would pass for a form of Yylobium squalens 
(Lindl.) Lindl., but the large flowers and the lip are 
very different. 
[ 156 | 
