Terrestrial, scandent or hemiepiphytic herb. STEM: ochre or green, sometimes reddish at apex, internodes 1-3x3- 4.5 cm; adventitious roots brown, abundant, c. 4 mm diam.; intravaginal squamules 0.5 - 1 x 1 - 1.5 mm, triangular, not persistent. LEAF: prophyll 20 - 31 x 1.5 - 2.5 cm, deciduous, linear-lanceolate, adaxial surface white, abaxial surface yellowish green; petiole 46 - 60 x 0.9 -1.4 cm, green, with discontinuous reddish striations, flattened or slightly canaliculate adaxially, sheath 4-7 cm long; leaf blade 45-63 x 31-35 cm overall, 1.5-1.8 times longer thanbroad, ovate in outline, broadest near the petiole insertion, pinnatilobed, slightly coriaceous, upper surface glossy green, lower surface paler, margins yellowish, basesagittate to sub cordate-sagittate, basal rib denuded for 2.5-5 cm, sinus forming a 90° angle; anterior division 34-45 x 31-35 cm, apex cuspidate to acuminate;primary lateral lobes of anterior division 6-7 per side, 1-8 x 4-6 cm, triangular or slightly falcate, apex rounded, rarely bifid; primary lateral veins 6-7 per side, slightlyarcuate, arising at an angle of 55 - 85° from the midrib, angle becoming more acute in more apical veins, interprimary veins usually inconspicuous; posterior divisions 15 - 21 x 15 - 17 cm, primary acroscopic veins 2-3, primary basiscopic veins 1-3, less prominent, basiscopic lamina area well developed, with slightly crenate or entire margins. INFLORESCENCE: erect, 1-3 per leaf axil; peduncle 8.5 - 12.5 x 0.8 - 1 cm, green, terete, slightly asperous; spathe 10-15 cm long, cuspidate or acuminate atthe apex, yellowish-green outside, white inside except for the carmine base; spadix 9 - 13 x 0.5 - 1.4 cm, terete, tapering to the apex, cream, stipe 0.5 - 1 cm long,fertile male zone 6 - 9 x 0.5 - 1 cm, intermediate sterile male zone 0.5 - 1 x 1 - 1.4 cm, female zone 4 - 4.5 x 1 - 1.2 cm, basally adnate to the spadix for two thirds of its length. FLOWERS: fertile male flowers: 3 - 4-androus, stamens prismatic, c. 1 x 0.5 mm; sterile male flowers: staminodes clavate, c.1.5 x 0.5 mm; female flowers: gynoecium subprismatic, 2-3 x 2-3 mm, locules 8-9, ovules 3-5 per locule, placentation near locule base, funicle as long as ovule, covered with trichomes up to the middle, style hemispherical. INFRUCTESCENCE: unknown.