Plants epiphytic, or sometimes, per-haps accidentally, terrestrial, often very large and coarse, the caudex said to be sometimes a meter long, the internodes short and thick; cataphylls persistent but weathering into long fibers; petioles most-ly 60-70 cm. long, geniculate near the apex, the node short and thick; blades thick-coriaceous when dried, hastate-tri-lobate, 30-50 cm. long or larger, the basal lobes rather narrow and more or less spreading, subreniform, somewhat recurved, separated by a very broad but deep sinus, the anterior lobe lance-oblong or ovate-oblong, acute or acuminate, 8-15 cm. wide below, the primary nerves very stout and salient, the costal nerves united to form an irregular collective nerve remote from the margin; peduncles 20-50 cm. long or more, slender or stout; spathes 7-20 cm. long, as much as 2.5 cm. wide near the base, linear-lanceolate, cuspidate-acuminate, reddish brown or greenish; spadix short-stipitate or almost sessile, cylindric or caudiform, 14-35 cm. long, in fruit up to 2.5 cm. in diameter at the base; sepals almost 3 mm. long; ovaries ovoid, 2 mm. long, attenuate to a style 1 mm. long; berries orange, 7 mm. long or more.
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