Plants rather small and slender, arising from a small, hypogean caudex; petioles long and slender, puberulent or short-villous; blades deep green and glabrous above, puberulent beneath, broadly sagittate-triangular, 20-30 cm. long, 15-25 cm. wide near the base, cuspidate-acuminate, 'the basal lobes somewhat triangular, narrowed to an obtuse apex, separated by a very broad and open sinus; peduncles slender, 15-35 cm. long, pilose; tube of the spathe green and purple, 6 cm. long, 2 cm. broad, oblong, pubescent, the limb lanceolate, acuminate, white, pubescent outside, 10-12 cm. long, 4.5-5 cm. wide, cuspidate-acuminate; spadix somewhat shorter than the spathe, the staminate portion slender, about 8 cm. long.
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