Robust terrestrial plants, colonial, the stems to at least 3 m long, horizontal in proximal part and supported by nodal prop-roots. Internodes 1.8-5.7+ cm long, 0.8-2.0 cm wide, medium green to gray-green, moderately glossy, drying amber- yellowish and sulcate; stems with whitish pubescent prop-roots to at least 1.2 m long and 3.5 mm thick. LEAVES: Petiole 37.6-75.7 cm long, P/L= (1.21-) 1.44-1.77 (-2.17), semiglossy, sheathed (54-) 57-73% , the sheath appearing erect on dried specimens, adnate distally or with the free portion prolonged by 1.0-2.0 (-4.0) mm; unsheathed portion of petiole 11.8-29.3 cm long, subterete. Lamina 21.4-45.9 cm long, 17.1-30.5 cm wide, L/W=(1.21-) 1,28-1.60 (-1.71), IQ1=0-3 (-4), thinly coriaceous to subcoriaceous, weakly glossy to semiglossy above, matte below, at least moderately bicolored, ovate (widest below the middle), 2: broadly short- to long-acuminate apically (the acumen 1.2-20.0 mm long), subtruncate to cordate basally with the sinus ca. 0.3-3.5 cm deep; midrib in life flat and slightly paler above, convex below; primary lateral veins 13-19 per side, (0.1-) 1.0-3.8 cm apart, sunken above, convex below, a few interprimaries visible; minor veins ± obscure below; abaxial laminar surface drying slightly to heavily granular (especially toward margins), the reticulate veins few and obscure; no white stitching visible; resin canals occasional; adaxial surface somewhat to heavily granular, otherwise relatively featureless. INFLORESCENCES always solitary; cataphylls of regular occurrence, 13.2-14.4 cm long, 0.4-1.2 cm wide, broad to involute; peduncle (6.4-) 8.5-12.0 (-16.5) cm long, P/S=0.61-0.80 (-0.99); spathe at anthesis 13.2-19.5 cm long, ca. 2.2 cm wide, "blanca" (Wendt et at. 4407); spathe drying densely and minutely granular and irregularly "lenticellate'' externally, internally densely and minutely granular with longitudinal secretory striations to ca. 3/4 or more to apex; acumen of spathe 0.2-1.4 cm long. Stipe of spadix to ca. 1.0 cm long, adnate to spathe; spadix 11.8-17.1 cm long, the fertile male portion 0.6-0,9 cm wide, white; sterile male zone 0.6-1.0 cm long; female portion of spadix 4.5-7.2 cm long, F/S=0.33-0.45, (0,8-) 1.0-1.1 cm wide, pale green; fertile male flowers 0.8-2.0 mm long, 0.7-1.3 mm wide, irregularly polygonal, often butterfly-shaped, columnar and ridged; sterile male flowers 0.8-1.5 mm long, 0.8-1.7 mm wide, anvil-shaped, substipitate; female flowers 1.6-2.2 (-2.7) mm long, 0.5-0.7 (-1.1) mm wide, the stylar canals 4 (-5?). INFRUCTESCENCE: Ripe fruits unknown. Seeds unknown.
selva alta perennifolia'' (Croat & Hannon 63348, Wendt et al. 4407). http://www.cate-araceae.org/reference/5eeac05c-6bfb-1014-a918-dc439151c9e5,