Pilea miguelii Dorr & Stergios

Herb or shrublet, to 1.5 m tall; terrestrial; monoecious. Stems erect, branched, ± suffruticose, drying dull green or dark blackish-brown, glabrous, cystoliths fusiform, sometimes very dense, internodes 2.3–11 cm × 2–3 mm (shorter distally), terete and becoming ± angulate in cross-section when dry. Stipules ca 2 mm long, deltoid, drying light-brown, caducous. Leaves petiolate, distichous; petioles at the same node unequal by a ratio of 1:(5–) 10–20, major petioles 0.5–4 cm long, minor petioles ca 1 mm long or subsessile, glabrous; laminae of leaves at each node unequal by a ratio of 1:5–11.5; major laminae in a pair 5–11.5 × 2–5.5 (–7) cm, narrowly ovate to ovate or obovate, slightly asymmetric, membranous, 3-nerved from the base or lateral nerves diverging from the midrib 1–2 mm above the base, secondary nerves 12–14 pair, borne 80–90° to the midrib; upper surface dull or dark green, glabrous, cystoliths fusiform, unequal in size, often dense, lower surface pale or dull green, glabrous, midrib and secondary nerves prominently raised, base asymmetrically cuneate, margin coarsely crenate to serrate its entire length, apex long acuminate; minor laminae in a pair 0.9–2 × 0.5–1 cm, otherwise as major laminae. Inflorescences > 20 per stem, unisexual, white, whitish-green or green; bracts broadly deltate, ca 1 mm long; bracteoles broadly deltate, ca 1 mm long. Staminate inflorescences 4 per axil, 10–15 × 17–20 mm, bearing > 50 flowers in a loose, spreading cyme; peduncles 2–5 mm long, glabrous; pedicels ca 0.5–1 mm long, glabrous. Staminate flowers ca 1 mm long, greenish-white; tepals 4, ca 0.75 mm long, ± verrucose; stamens 4. Pistillate inflorescences 4 per axil, ca 10 × 18 mm, bearing > 50 flowers in a loose, spreading cyme; peduncles 2–5 mm long, glabrous; pedicels 0.5–0.75 mm long, glabrous. Pistillate flowers ca 0. 5 mm long. Infructescences not seen.