minata. Labellum complicatum, carnosum, rigidum, 
nitens; dimidium inferius subgloboso-saccatum, intus 
verrucoso-corrugatum, extus per medium leviter sulea- 
tum, supra carnosissimum et profunde suleatum, apice 
bicornutum; cornua incurva, dimidii anterioris margines 
basales amplectentia; dimidium anterius planum, late 
rhombico-ovatum, apice rotundato-obtusum, leviter sul- 
catum. Columna plana, leviter arcuata, supra alata. 
Plant epiphytic, composed of a small monophyllous 
pseudobulb and a pendent several-flowered inflorescence, 
3.5-7.5 dm. tall. Pseudobulb globose to ovoid, 4-5 cm. 
long, 2.5-8 em. wide at the base, partially concealed by 
fibrous scarious sheaths. Leaf solitary, at the apex of the 
pseudobulb; petiole sulcate, 9-12 cm. long, 7-8 mm. in 
diameter; lamina dark green, glossy, elliptic, subapicu- 
late at the apex, plicate toward the base with five prom- 
inent nerves which form dorsal keels, 40-50 cm. long, 
12-14 cm. wide. Inflorescence a 8- to 5-flowered raceme, 
pendent from the base of the pseudobulb and covered 
with dry hard imbricating bracts which vary from 1.5 to 
4¢em. in length. Floral bracts suborbicular-elliptic when 
spread out, apiculate, fibrous, whitish, deeply concave, 
with the margins involute, 5—-6.5 em. long, up to 5.5 cm. 
wide when spread out. Flowers large, showy, creamy 
white with purple or reddish flecks, with somewhat tri- 
angular papillose pedicellate ovaries which are 6.5-9 cm. 
long. Dorsal sepal oblong-elliptic, rounded or subapicu- 
late at the dorsally keeled apex, 5-5.7 cm. long, 2.5-38 
em. wide. Lateral sepals oblique, ovate-elliptic, broadly 
obtuse to apiculate at the dorsally keeled apex, deeply 
concave, united at the base for a short distance and con- 
forming with the basal half of the lip, 5.5-6 cm. long, 
3.8-3.7 cm. wide below the middle. Petals slightly ob- 
lique, ovate-lanceolate, acute to shortly acuminate, 4—4.7 
cm. long, 1.6-1.9 em. wide near the base. Lip fleshy and 
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