A large, epiphytic vine; petioles rather stout, subterete, 12-45 cm. long, vaginate below for 3-5 cm.; blades thick and almost subcoriaceous when dried, oblong-ovate to broadly ovate, 35-60 cm. long, 15-28 cm. wide, gradually and narrowly acuminate, deeply cordate at the base, with a rather narrow, acute sinus, the basal lobes 5-12 cm. long, rounded, directed downward, bright green and lustrous above, pale beneath and almost glaucescent, the costa thick and prominent, the primary lateral nerves about 10 on each-side, slender, elevated, much stouter than the very numerous secondary nerves; spathe about 16 cm. long, 1.5 cm. thick at the base, green below, white above, the spadix of about the same length.
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