Moderate, solitary, unarmed, pleonanthic, monoecious palms. Stem stout, erect, becoming bare, irregularly ringed with leaf scars. Leaves pinnate, erect or ±horizontal, arching, marcescent; sheath becoming open opposite the petiole, not forming a crownshaft, expanded and thicker basally, margins fibrous, both surfaces covered with waxy, caducous tomentum, thinner adaxially; petiole relatively short, deeply grooved adaxially, rounded abaxially; rachis adaxially grooved near the base, flat and laterally channelled distally; leaflets narrow, lanceolate, wider at the middle, tapering to a pointed tip, single-fold, adaxial surface lightly waxy, abaxial surface with thin waxy tomentum and scales along the midrib, midrib and 2 pairs of lateral ribs more evident abaxially, transverse veinlets not evident. Inflorescences solitary, interfoliar, becoming infrafoliar, erect at first, pendulous later, branched to 1(–4) orders, protandrous; peduncle stout, elongate, elliptic in cross-section; prophyll tubular, dorsiventrally flattened, with 2, rather wide, lateral keels, pointed, splitting apically and ventrally, woody, lightly waxy, tomentose, inserted at the base of the peduncle; peduncular bract tubular, pointed, stiff, thinner than the prophyll, lightly waxy and tomentose, inserted about halfway along the peduncle, often shed before the prophyll leaving a ruffled scar, subsequent peduncular bracts few, short, spirally inserted; rachis ca. 2/3 as long as the peduncle; rachis bracts short, wide and irregularly notched to pointed, ovate distally; lower branches with a short bare portion, then branched 1(–2) times into rachillae; rachillae moderate, rather short and crowded, bearing rows of partly sunken, short, rounded bracts, each subtending a triad of flowers borne in a pit; floral bracteoles 3, the first bracteole narrow elongate, the second short, wide, truncate, the third short, pointed. Staminate flowers lateral and outside of the pistillate flower in the pit; sepals 3, distinct, unequal, long, narrow, ± keeled, rounded or pointed distally, imbricate basally, chaffy; petals 3, adnate basally to the receptacle, connate for 2/3 their length in a tube, tips valvate; stamens 6, filaments fleshy, connate and adnate to the receptacle for 2/3 their length, the receptacle elongating at anthesis, forming a stalk-like base to the androecium, the androecium hence far-exserted distally, the filaments terete, anthers sagittate, dorsifixed near the base, introrse, versatile and horizontal at anthesis, connective tanniniferous; pistillode 3-lobed with minute tips or lacking. Pollen ellipsoidal, usually with either slight or obvious asymmetry; aperture a distal sulcus; ectexine tectate, perforate, perforate-rugulate or rugulate-insulate, aperture margin slightly finer or psilate; longest axis 24–49 µm. Post-meiotic tetrads tetrahedral [3/3]. Pistillate flowers asymmetrically triangular in bud; sepals 3, distinct, imbricate, narrow, briefly keeled, pointed, margins irregular; petals 3, connate in a tube with short valvate apices, upper 1/4 shed as a circumscissile cap; staminodes completely connate, urn-shaped, inflated above the corolla tube at anthesis, white, membranous, exserted, pushing off the corolla cap, the apex briefly 6-toothed; gynoecium trilocular, triovulate, ± 3-angled, adaxial side longest, style long, cylindrical, stigmatic lobes 3, short, linear, ovule large, anatropous. Fruit ovoid, 1-seeded, stigmatic remains basal; epicarp smooth, granular when dry, mesocarp fleshy with stout fibres anastomosing distally, one large fibre conspicuous, endocarp thin, colourless, tough, with a circular operculum over the embryo. Seed globose-ellipsoidal, raphe unbranched, encircling the seed, hilum short, basal, endosperm homogeneous; embryo basal. Germination adjacent-ligular; eophyll bifid. Cytology: 2n = 28.