Trunk gray, to ca. 5 m. high or more, 6-9 cm. in diam. Leaves ca. 10 or more; sheaths to ca. 3 dm. long, brown.fibrous.margined, the inner ones densely golden appressed. villous; petiole as long as the blade or longer, 1-1.3 m. long, ca. 1.5 cm. wide at base and apex, brown furfuraceous lepidote becoming glabrate; hastula deltoid with incurved margins, ca. 2 cm. high, 2 em. wide; blade green and shining above, silvery below, 0.65-1.12 m. long, to 1.2 m. across, divided centrally to within 15-18 (or 3-5 fide Dugand) cm. of the base, divided laterally to or nearly to the base into 5-7 elongate-cuneate many-ribbed segments 1.2 m. long, 7-25 cm. wide, each again divided into 3-6 acute l-ribbed segments 8-24 cm. long, 2-4.5 cm. wide, these with the midrib prominent below, the midrib, a lateral nerve on each side, and numerous oblique cross-veinlets evident above, lower surface covered with a continuous layer of thin white membranous scale3, these rubbing off on contact. Inflorescences several among the leaves, to ca. 8 dm. long; peduncle ca. 5 dm. long, flattened at base, brown tomentose when protected, bearing a prophyll inserted ca. 21 cm. above the base and 2 sterile bracts at intervals of ca. 14. and 10 cm. respectively, these (fide Burret) to 25 cm. long, oblonglanceolate, densely dull gray-whitetomentose outside; rachis ca. 35 cm. long with ca. 50 simple rachillae, the lowest to 16 em. long, upper shorter, each subtended by a small fertile bract. Flowers sessile or on a low tubercle, subtended by a short bract; perianth 2.5 mm. high; sepals 4, ovate or nearly semiorbicular, slightly imbricate, rounded at apex; petals 4, longer than the sepals, ovate-oblong or oblong, rounded; stamens 8 (-9) , filaments flattened, broad basally, narrowed above, nearly filiform at the anthers, these oblong; carpels 2 or rarely 1. Fruit greenish or probably yellowish or whitish at full maturity, globose or subglobose, 1.8-2.0 cm. wide, 1.7-2.0 cm. high; epicarp not tessellate; mesocarp whitish, ca. 1.5-2 mm. thick when fresh: seed depressed-globose, ca. 1.6 cm. wide, 1.3 cm. high, the seed coat thickened and slightly intruded on either side of the hilum; embryo in lower third; germination remote-tubular with 1 scale leaf and bifid eophyll.