Herbs 1-1.3 m tall. Stems brown long pilose and glandular hairy. Leaves 1 or 2 × ternately compound or pinnately compound; common petiole and petiolules brown long pilose and glandular hairy; leaflets rhombic-elliptic or broadly to narrowly ovate, rarely oblong, (2.8-)6-17.5 × (1.6-)2.8-10.6 cm, glandular hairy, base obliquely cordate to obliquely rounded, margin doubly serrate, sometimes 2-lobed, apex acuminate. Panicle (13-)25-40 cm; branches and pedicels brown glandular hairy; bracts subulate, 1.6-3.2 × 0.2-0.5 mm, abaxially glandular hairy, adaxially glabrous. Sepals 5, ovate, 1.5-2.2 × 1-1.5 mm, subleathery, abaxially and marginally tawny glandular hairy, adaxially glabrous, 1-veined, apex usually shortly acuminate. Petals 2-5 and obsolescent, or absent, white, linear or spatulate-linear to subulate, 1-1.5 × 0.1-0.2 mm, 1-veined, apex acute. Stamens 8-10, 1.3-3.5 mm. Pistil 1.5-4 mm; carpels 2, base connate; ovary subsuperior; styles 2, divergent. Fl. and fr. Jun-Sep.
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