Plants glabrous, monoecious. Stems 0,3-1.0 mm in diameter, profusely branched, in habit appearing bushy; lower internodes elongate (to 13.5 cm long), the upper internodes shortened (to 7 mm long or less). Leaves 1.2-2.8 cm long; laminas 0.6-1.9 mm wide, acute to acuminate, mucronate, conspicuously serrulate with 15-25 teeth per side, the mucro slightly larger than the lateral teeth, the teeth multicellular, formed by layers of cells decreasing in cell number outward, terminated by a large, sharp-tipped cell; auricles 1.2-3.4 mm wide, wider than the laminas, round to truncate, serrulate with 2-7 teeth per side, the teeth similar in structure to but smaller than those of the laminas. Flowers solitary, the staminate in the upper leaf axils, the carpellate in the lower leaf axils, the in-volucre purple-tinged; staminate flowers 2.0-2.2 mm long, the involucre above the anther abruptly narrowed into a short beak (0.5 mm long), ending in 4 sharp-tipped lobes, the anther to 1.6 mm long, 1-thecate, the filament at anthesis to 1.2 mm long; carpellate flowers 1.7-2.1 mm long, the involucre above the ovary abruptly narrowed into a short beak ending in 3-4 sharp-tipped lobes, the style ending in 2 stigmatic lobes that extend above the involucral beak. Fruit 2.1-2.6 mm long and 0.6-0.8 mm wide, yellowish-white, elongate-fusiform, with a single basally flattened keel-like rib along which the involucre splits, the areolae some-times inconspicuous, longer than broad, to 0.2 mm long and ca. 0.05 mm broad, in ca. 50 longitudinal rows, the end walls raised giving the pericarp wall a papillose appearance; seeds elongate-fusiform, greenish-white with 3 dark bands.
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