Terrestrial; internodes 1--1.5 cm long, 8--12 mm diam., drying yellow-brown, semiglossy, conspicuously ridged; roots drying reddish brown to brown, slender, numerous per node; cataphylls to 11.5 cm long, 1-ribbed, drying yellowish brown, thin, smooth (not scaly), persisting as a thin, pale reticulum of branched tan fibers; LEAVES: Petioles 31--32 cm long, 2--3 mm diam., subterete, drying weakly glossy, smooth or at most, weakly granular, surface densely covered with broad pale scales near apex, the scales closed and overlapping, mostly less than three times longer than broad; blades ovate-cordate, subcoriaceous, shortly acuminate at apex, cordate at base, 21--22 cm long, 13--16 cm wide (1.4--1.5 times longer than wide), (0.66--0.67 as long as petiole), upper surface dark green, subvelvety and glistening, drying grayish green, lower surface much paler, semiglossy, drying yellowish brown and moderately glossy; anterior lobe 15--16.7 cm long, 15.3 cm wide (2.2--2.6 times longer than posterior lobes); posterior lobes 6.5--6.7 cm long, 7 cm wide, rounded; sinus obovate to narrow hippocrepiform and closed; midrib drying sunken and concolorous above, convex, matte below; basal veins 6 per side, with 2 free to base, third and higher order veins coalesced 1 cm, sunken above, convex below; posterior rib not naked; primary lateral veins 3 per side, departing midrib at a 40--45º angle, quilted-sunken above, round-raised or raised, darker below; minor veins distinct, arising from both the midrib and primary lateral veins; "cross-veins" prominently raised upon drying. INFLORESCENCES probably 1 per axil; peduncle 4.5 cm long, 4 mm diam., more or less terete, glabrous; spathe 11 cm long, (2.4 times longer than peduncle), green, drying dark reddish brown; spadix sessile; 9.5--10.5 cm long; pistillate portion 3 cm long, 1 cm diam.; staminate portion 6.5--7.5 cm long, 1--1.5 cm diam.; pistils 1.5 mm long, 1.9 mm diam.; ovary 6-locular, 1.2 mm diam., locules 1 mm long, 0.3 mm diam., ovule sac 0.1--0.2 mm long, with axile placentation; ovules ca. 14 per locule, 2-seriate, contained within small, cloudy, gelatinous ovule sac, 0.1--0.2 mm long, longer than funicle; funicle to 0.1 mm long, adnate to lower part of partition, style similar to style type B; style apex flat; stigma hemispheroid, lobed, 1 mm diam., 0.3--0.4 mm high, covering entire style apex, depressed shallowly at center; the androecium truncate, more or less prismatic, margins irregularly 4--5-sided, ca. 1 mm long; sterile staminate flowers irregularly 4--5-sided, 1.6--2.1 mm long.