A large or small, epiphytic vine, the caudex stout, often 1 cm. in diameter, the internodes 1-2.5 cm. long, or the lower ones longer; petioles stout and succu-lent, 5-14 cm. long, the sheath broad, green, rounded at the apex, extending to the base of the blade, usually persistent; blades thinly coriaceous when dried, elliptic-oblong to broadly oblong or rounded-ovate, mostly 10-18 cm. long and 6-12 cm. wide, obtuse to rounded at the apex and abruptly cuspidate or cuspidate-acuminate, broadly rounded to subacute at the-base, the primary lateral nerves 8-10 on each side, usually divergent at a wide angle but sometimes very oblique, scarcely stouter or more conspicuous than the secondary and tertiary ones; pedun-cles stout, 1-3 cm. long; spathes oblong, greenish or yellowish green, often cream-colored or white, 8-19 cm. long, the tube elongate, oblong, the limb open at anthesis, short-acuminate, coriaceous when dried; spadix sessile, cream-colored, cylindric, 10-16 cm. long, the pistillate portion about one-third as long as the staminate, the latter attenuate upward; pistils narrowly oblong, 4-celled, the ovules mostly 4-seriate; stamens 3-4.
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