Plants coarse, epiphytic, sometimes terrestrial, the caudex very short or almost none, thick; petioles stout, 10-16 cm. long, the node short and rather stout; blades subcoriaceous when dried, black-punctate beneath, often densely so, oblanceolate-oblong, 25-38 cm. long, mostly 9-11' cm. wide, rather abruptly short-acuminate, long-attenuate from the upper third to the narrow base, the primary lateral nerves numerous, rather stout and prominent, ascending at an angle of 45 degrees or more, united to form a distinct, regular collective nerve 2-3 mm. from the margin; peduncles slender, terete, 11-35 cm. long; spathe linear-lanceolate, green tinged with dark red, or purplish white, acuminate, 5-10 cm. long, 5-10 mm. wide; spadix subsessile, caudiform, 11-22 cm. long, 4-5 mm. thick, reddish brown; sepals oblong; pistils ovoid.
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