Pachycaul treelet to 5 m, ?unbranched; bole c. 8 cm diam. Bark smooth; inner bark pale yellow. Leafy twigs c. 1 cm diam., densely ferruginous-setose. Leaves to 1 m long, imparipinnate, at least 6-jugate; petiole to 35 cm long, subterete, sometimes grooved adaxially, to 6 mm diam., ferruginous-setose with hairs 2–3 mm long, base swollen with conspicuous hollow at junction with shoot; rachis 1-or 2-sulcate, setose as petiole. Leaflets ± densely ferruginous setose on both sides, setae tinkling when stroked (in sicco), pale when dry, proximal leaflets to 20 by 8.5 cm, elliptic oblong, distal to 36 by 10 cm, oblanceolate to oblong, base rounded to attenuate, apex acuminate, acumen 10–20 mm, costae 17–20 on each side, prominent abaxially, tertiary venaltion ± prominently scalariform; petiolules 5–6 mm long, densely tomentose, that of terminal leaflet to 10 mm. Inflorescence to 2 m, pendulous, ± densely setose, drying irregularly angled with flowers crowded in condensed cymes at distal end like a bellrope, bracts c. 7 mm long, setose. Flowers recurved, shortly pedicellate. Calyx c. 3 mm long and 4 mm diam., cupular, somewhat elongated into a pseudopedicel, reddish, setose to pubescent, margin truncate to obscurely 3-or 4-lobed. Corolla 3–3.5 cm long, c. 3 mm diam., weakly clavate, glabrous, white or greenish; petals 4–6, to 4 mm wide, subspathulate, imbricate at spices. Staminal tube to 3.2 cm long, glabrous except for a band of hairs below lobes without, white, margin with 6–8 truncate or irregularly lobed lobes anthers 6–8, c. 2 mm long, glabrous, scarcely locellate. Disk c. 1 mm tall, cupular, glabrous, margin truncate to obscurely lobed. Ovary in female flowers unknown; style sparsely pilose proximally, glabrous distally; stylehead capitate, distinctly narrow-annular apically. Fruit (unripe) pale yellow, densely setose.
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