Epiphytic herbs with stout, ovoid, somewhat laterally compressed, often rather angulate or plurisulcate pseudobulbs 4-10 cm. long and 3-6 cm. wide, the bases enveloped in 3-4 closely imbricating, papery bracts, the upper 2 of which are foliaceous, the largest blade about 40 cm. long and 10-12 cm. broad; the apex of the pseudobulbs with 2-3 broad, plicate, oblanceolate, acute or acuminate leaves 40-75 cm. long and 10-12 cm. broad, which are ultimately deciduous; the apices of the old pseudobulbs not armed with sharp spines. Inflorescences few to many erect, single-flowered scapes 8-18 cm. tall, from the base of the mature pseudobulbs, the rachis enveloped in several broad, papery, spathaceous bracts, the uppermost of which is usually broadly cucullate, acute, about equaling or somewhat exceeding the ovary. Flowers large and conspicuous, fragrant, more or less nodding. Sepals subequal, broadly spreading, olive-green, sometimes shaded on the margins with reddish-brown, the dorsal sepal free, erect, lanceolate to elliptic-lanceolate, acute, 4.5-6 cm. long and 1.5-2.5 cm. wide, laterals adnate to the foot of the column, forming a short mentum, from the oblique base lanceolate to elliptic-lanceolate, acute, 4.5-6 cm. long and 2-3 cm. wide. Petals subequal to the sepals, not spreading, more or less parallel with the column, white, often spotted rose-pink, linear-lanceolate to elliptic-oblanceolate, acute, the apices recurved, 4-5 cm. long and 1.8-2.2 cm. broad. Lip 3-lobed, 3-4.5 cm. long and 1.4-1.6 cm. wide when spread out, usually not equaling the petals, narrowed at the base and articulated with the foot of the column, white, usually with the margins of the apex spotted or blotched rose-red, lateral lobes erect, the apices rather irregularly oblique, mid-lobe spreading, ovate to subquadrate, acute or obtuse, the margins slightly ciliate and incurved; disk with a fleshy, lanceolate, acute, concave callus. Column slender, semiterete, somewhat arcuate, white, 18-23 mm. long.
Home