A tree, 30–40 ft. high; branchlets lepidote. Leaves 6 1/2–12 in. long; leaflets 5–9, shortly stalked, elliptic-oblong or obovate, rather shortly, abruptly and obtusely acuminate, mucronulate, cuneate at the base, 2–5 1/2 in. long, 1 1/4–2 3/4 in. broad, entire or serrate, lepidote above, very densely lepidote below and pilose in the axils of the veins. Panicles terminal and axillary; rhachis lenticellate, densely lepidote, pilose above, especially at the nodes. Pedicels 3–5 lin. long, densely pubescent. Calyx 7–8 lin. long, shortly and obtusely cuspidate, split down to within 2 1/2–3 lin. from the base, densely lepidote, pubescent. Corolla yellow, striped with red on the lower lip; tube campanulate above, 16–18 lin. long; basal cylindric portion 4 lin. long, 1 1/3–1 1/2 lin. in diam.; lobes 6–7 lin. long, conspiculously glandular. Stamens inserted 3 1/2–4 1/2 lin. above the base of the corolla-tube; filaments much thickened and furfuraceous at the base; anther-lobes 1 1/4–1 1/2 lin. long. Disc cupular, 1 1/4 lin. high. Ovary 3 1/2 lin. long, very densely lepidote, minutely pubescent. Stigma-lobes elliptic, bifid at the apex. Capsule over 1 ft. long, 4 1/2–5 lin. broad, minutely puberulous and lepidote; midrib of valves very prominent; seeds 9 lin. long, 1 1/2 lin. broad; nucleus 3 1/2 lin. long.