Moderate, solitary, unarmed, pleonanthic, monoecious palm. Stem erect, bare, ringed with close leaf scars. Leaves pinnately ribbed, undivided except for the bifid apex, but often split by wind; leaf sheaths soon splitting opposite the petiole, not forming a crownshaft, densely tomentose, with an irregular ligule at the mouth, disintegrating into fine only partially enclosing the inflorescence in bud, splitting abaxially near the tip, beaked, strongly 2-keeled, coriaceous to sub-woody, densely tomentose, tending to disintegrate into fibres; peduncular bract longer than the prophyll, inserted just above the prophyll, tubular, beaked, enclosing the inflorescence in bud, densely tomentose; subsequent bracts rather small, incomplete, broad, triangular; rachis only slightly longer than the peduncle; all inflorescence axes tomentose; rachillae stiff, relatively thick, gradually tapering to a pointed tip, bearing spirally arranged, shallow pits, the rachilla bracts forming low triangular lips to the pits, pits in the proximal ca. 1/4–1/3 of rachillae containing triads, distally containing paired or solitary staminate flowers, the rachilla bracts at the tips of the rachillae more prominent than at the base; floral bracteoles low, rounded, inconspicuous, included within the pits. Staminate flowers small, ± globular, ± symmetrical, only partially exserted from the pit; sepals 3, distinct, imbricate, strongly keeled, rather chaffy; petals 3, about twice as long as the sepals, united proximally and adnate to the receptacle forming a stalk-like base, distally ± triangular-ovate, striate, valvate; stamens 6, the filaments united basally to the pistillode forming a solid column above the insertion of the free portion of petals, free filaments fleshy, triangular, gradually tapering to the connective, anthers short, medifixed, basally sagittate, latrorse, the connective prolonged in a brief point; pistillode pyramidal. Pollen ellipsoidal slightly asymmetric; aperture a distal sulcus; ectexine tectate, perforate-rugulate, aperture margin similar or slightly finer; infratectum columellate; longest axis 22–27 µm [1/1]. Pistillate flowers globose, at anthesis larger than the staminate, tending to crack open the floral pits; sepals 3, distinct, broad, rounded, imbricate; petals 3, distinct, broadly imbricate except for brief, triangular valvate tips, very briefly joined basally to form a short broad stalk with the receptacle; staminodes 3–6, triangular, flattened, very small; gynoecium ± trilocular, uniovulate or rarely a second ovule present, rounded, stigmas 3, short, reflexed, ovule laterally attached, campylotropous. Fruit large, spherical, perianth whorls persistent, stigmatic remains basal, the fruit surface cracked into low, pyramidal, corky warts; epicarp obsolescent at maturity, mesocarp massively corky with abundant radiating fibres, endocarp thin, woody. Seed basally attached with rounded hilum, endosperm homogeneous with a large central hollow; embryo basal. Germination adjacent-ligular; eophyll bifid. Cytology: 2n = 32.