branacea, nervis pluribus conspicuis praedita, laminis 
infimis et supremis multo minoribus. Inflorescentia ter- 
minalis, leviter paniculata. Pedunculi pars inferior gra- 
cilis, flexuosa; pars superior dense pluriflora, bractea 
oblongo-elliptica subtenta. Bracteae oblongo-lanceolatae, 
nervosae, patentes. Flores parvi. Sepalum dorsale anguste 
oblanceolato-oblongum, naviculare, subobtusum. Sepala 
lateralia lineari-oblanceolata, obliqua, valde navicularia, 
acuta, dorso carinata. Petala faleato-linearia. Labellum 
columnae basi alte adnatum, in laminam obovato-pandu- 
ratam expansum; lamina leviter trilobata; lobi laterales 
complanato-semiobovati, antice subacuti; lobus inter- 
medius obovato-reniformis, valde retusus cum apiculo; 
discus callo U-formi crasso ornatus. Columna gracilis, 
superne leviter arcuata, glabra, antice concava. 
Plant caespitose, coarse, glabrous, with numerous long 
fibrous roots which are densely tomentose, 6 dm. tall. 
Stem robust, terete, up to 3.9 dm. long, 4-5 mm. in 
diameter, provided below with scarious appressed tubular 
sheaths, loosely 4- or 5-leaved above. Leaves large, ellip- 
tic or elliptic-oblong, acute or shortly acuminate, con- 
spicuously 9- to 13-nerved, up to 27.5 cm. long and 8 cm. 
wide, the lowermost and uppermost often much smaller, 
plicate, submembranaceous, abruptly tapering into the 
sheathing petioles of which the bases are imbricating. 
Inflorescence terminal, lax and flexuous, up to 10 em. 
long; peduncle filiform, provided above the middle with 
a narrowly lanceolate foliaceous bract which is up to 5.6 
em. long; flowers dense, more or less paniculate. Floral 
bracts ovate to oblong-lanceolate, shortly acuminate, 
concave, membranaceous, with five or more conspicuous 
light brown nerves, 8-12 mm. long, 2-8 mm. wide below 
the middle. Flowers small. Dorsal sepal narrowly oblan- 
ceolate-oblong, subobtuse, navicular especially above, 
dorsally carinate with the keel sparingly ciliate, 5-nerved, 
[ 114 ] 
