Slender, clustered, unarmed, pleonanthic, dioecious, undergrowth palms. Stem erect, colonial by slender rhizomes, partly obscured by marcescent leaf sheaths above, becoming bare basally, with rather short internodes and inconspicuous nodal scars. Leaves small, reduplicately palmate; sheath splitting opposite the petiole, frequently covered with very dense, caducous tomentum; petiole conspicuous, ± rounded in cross-section except at the base where channelled adaxially; hastulae mostly absent, a low crest sometimes present adaxially; blade flabellate or ± orbicular with a very short costa, divided along a few abaxial folds to the insertion into few broad or narrow single-fold or compound, spathulate, acuminate segments, tips sometimes bristly, blade surfaces similar in colour, midribs more prominent abaxially, transverse veinlets conspicuous, rather distant and somewhat sinuous; young leaves sometimes reddish-tinged. Inflorescences solitary, interfoliar, the staminate and pistillate superficially similar, branched to 2 orders; prophyll tubular, closely sheathing, 2-keeled, with 2 short triangular lobes; peduncle elongate, bearing several (ca. 6) closely sheathing tubular bracts with short triangular limbs; rachis longer than the peduncle; rachis bracts like the peduncular, but tending to split at the tip, each subtending a first-order branch; first-order branches few, rather short, bearing a basal, tubular, 2-keeled prophyll and sometimes 1 empty tubular bract, and distichously arranged, tubular, triangular-tipped bracts, each subtending a rachilla; staminate rachilla short, becoming recurved, with a basal, membranous, striate, 2-keeled prophyll and few (up to 12) distichous, membranous, apiculate, cup-shaped bracts, each, including sometimes the prophyll, subtending a solitary staminate flower bearing a 2-keeled bracteole, or a pair of staminate flowers enclosed within a 2-keeled, explanate bracteole, one of the pair bearing a second bracteole; pistillate rachilla usually very short, sometimes scarcely exserted from the subtending bract, bearing a basal, membranous, 2-keeled, striate prophyll and few (up to ca. 8) distichous, membranous, cup-like, apiculate bracts, each, including sometimes the prophyll, subtending a solitary pistillate flower, bearing a 2-keeled bracteole and a minute, ovate, flattened second bracteole. Staminate flowers symmetrical; calyx tubular, briefly 3-lobed, ± striate; petals much exceeding the calyx, basally connate, the tips valvate; stamens 6, borne at the very base of the petals, filaments thick, fleshy, ± angled, the anthers small, basifixed, latrorse; pistillode minute or short, columnar. Pollen ellipsoidal, bi-symmetric; aperture a distal sulcus; ectexine intectate, surface very finely granular, interspersed with bottle-shaped spines set in, and loosely connected to, cavities in a wide foot layer, bulging noticeably inward beneath each spine, the inner face of the foot layer clearly lamellate, aperture margin similar; longest axis 28–41 µm [1/1]. Pistillate flowers larger than the staminate; calyx tubular, 3-lobed, splitting somewhat irregularly after fertilization; corolla much exceeding the calyx, tubular in basal ca. 1/3, with 3 elongate, valvate lobes; staminodes 6, adnate to the base of the corolla lobes, the filaments somewhat angled, the empty anthers minute; gynoecium incompletely trilocular, triovulate, ± rounded, covered in vertical rows of reflexed scales, style conical, briefly 3-lobed, ovule anatropous, ?basally attached. Fruit rounded or oblong, usually 1-seeded, with apical stigmatic remains; epicarp covered in vertical rows of reflexed reddish-brown scales, mesocarp thin, endocarp not differentiated. Seed attached near the base at one side, with a shallow furrow along the raphe, testa ?fleshy, endosperm homogeneous; embryo lateral. Germination adjacent-ligular; eophyll bifid. Cytology: 2n = 30.