A tree about 50 ft. high; trunk straight, up to more than 3 ft. in diam.; branchlets somewhat compressed in the upper part, otherwise terete, very minutely pubescent or almost glabrous, blackish when dry. Leaves oblong, lanceolate-oblong or elliptic, abruptly acuminate, rounded, acute or cuneate at the base, 6–10 in. long, 2 1/2–4 in. broad, minutely pubescent in bud, soon quite glabrous, margins undulate; nerve-axils efoveolate; secondary nerves 10–15 on each side; veins obscure; petiole 3–5 lin. long. Cymes shortly peduncled, many-flowered, dense, very minutely pubescent; peduncle 2–3 lin. long; bracts small, ovate, acute or subacute; pedicels 1–2 lin. long. Calyx 1 1/4–1 1/2 lin. long; sepals ovate, subacute, sparingly and minutely pubescent on the back, each with two glands at the base. Corolla white, more or less delicately velvety without, short, conical or subcylindric and 6 lin. long in bud; tube constricted just below the middle, 3–4 lin. long; lobes oblong, obtuse, 2 1/2–4 lin. long. Stamens inserted at the middle of the corolla-tube. Disc 5-lobed; lobes entire or crenulate, broadly rotundate, surrounding the ovary to 2/3 of its height. Follicles lanceolate when closed, acute, 5–6 in. long, laterally acutely 2-carinate, thin, woody. Seeds 9–10 lin. long, more or less covered with long and somewhat deciduous silky hairs; awn 11–12 lin. long, hairs 2 in. long.
