Stems to 60 cm long, sparsely branched, appressed-pubescent, soon glabrous. Leaves mostly crowded at annual increment apex, pinnatipartite into 3-6 arched lobes, ±flat; petiole 3-5 cm long; lamina 3-15 cm long, 5-12 cm wide; ultimate lobes linear, 1.2-4 mm wide, acute, reticulate, pubescent but soon glabrous except petiole sheath which is velvety adaxially. Spikes in upper axils, simple or sparsely branched, 2-3 cm long; flowers crowded; peduncle to 28 cm long, glabrous; rachis puberulous; bracts broadly ovate, acute, spreading, sparsely puberulous; margins shortly ciliate. Perianth swollen, opening widely, glabrous except a few hairs behind anthers; adaxial tepal 6 mm long, 2.5 mm wide; abaxial tepal 4-4.2 mm long. Stigma ovate, concave, thick, 2 mm long, 1.1-1.2 mm wide; ovary glabrous to pilose. Fruit obovoid to ellipsoidal on short neck, 6 mm long.
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