Plants epiphytic or terrestrial, often growing on rocks, rather large and coarse, acaulescent; petioles subtetragonous, less than one-fourth as long as the blade, usually very short, sometimes as much as 15 cm. long and 1-1.5 cm. thick, with a very short node; blades obovate-oblong or oblanceolate-oblong, commonly 50-60 cm. long and 15-20 cm. wide, often larger, acute or acuminate, coriaceous when dried, gradually narrowed from ab6ut the middle to the narrow, cuneate base, the costa stout and prominent, 1 cm. thick at the base, the primary lateral nerves about 14 on each side, stout and prominent, not forming a distinct collective nerve, ascending at an angle of 45 degrees; peduncles shorter than the leaves, often very short, sometimes 60 cm. long, stout or slender; spathe reflexed, 10-25 cm. long or more, 2 cm. wide near the base, pale green or sometimes tinged with red or purple, long-attenuate, more or less decurrent at the base upon the peduncle; spadix 15-25 cm. long, often 1 cm. or more in diameter at the base, attenuate upward, reddish or greenish, in fruit 2 cm. thick.
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