A shrub or tree, 15–30 ft. high; branchlets finely lepidote, soon glabrescent. Leaves 9–20 in. long; leaflets 7–11, conspicuously stalked, ovate, ovate-oblong or lanceolate, acuminate, mucronulate, cuneate or attenuate at the base, 3–7 1/2 in. long, 1 1/4–2 1/2 in. broad, entire or occasionally serrulate in a young state, sparsely lepidote or glabrescent above, lepidote and sometimes puberulous below. Panicles terminal and axillary, corymbose, densely lepidote; rhachis blackish, densely lenticellate. Peduncles 1–2 1/2 lin. long; pedicels 2–3 1/2 lin. long. Calyx 10–14 lin. long, uncinate, split down to within 3 1/2–6 lin. from the base, herbaceous, densely lepidote. Corolla yellow, rarely lilac (Brown); tube campanulate above, 15–20 lin. long; basal cylindric portion 4–5 1/2 lin. long, 1 3/4–2 lin. in diam.; lobes 7–9 lin. long, conspiculously glandular. Stamens inserted 4–5 1/2 lin. above the base of the corolla-tube; filaments much thickened and pilose at the base; anther-lobes 1–1 1/2 lin. long. Disc annular, 1/2– 3/4 lin. high. Ovary 2 1/2–3 lin. long, very densely lepidote; stigma-lobes elliptic or elliptic-oblong, bifid at the apex. Capsule falcate, 18–22 in. long, 5–6 1/2 lin. broad, minutely and densely lepidote; seeds 1–1 1/4 in. long, 2 1/2–2 3/4 lin. broad; nucleus 4 1/2–5 lin. long.