Tree, 20–35 m. high. Trunk c. 45 cm. in diam. Bark thin. Branches not or obscurely lenticellate, medium to dark brown and not sulcate when dry; branchlets glabrous, usually slightly sulcate when dry, mostly darker than in S. mitis. Leaves with glabrous, 3–8 mm. long petioles, those of a pair joined at the base by a distinct stipular line; lamina dull, drying pale greenish–brown with dark brown, paler beneath, coriaceous, elliptic or narrowly elliptic, 2–3·5 times as long as wide, 5–12 x 2–5 cm., acuminate at the apex, cuneate at the base, glabrous on both sides; secondary veins 5–8 on each side; tertiary venation not very conspicuous, slightly prominent on both sides. Inflorescence axillary, usually also in the axils of the apical leaves and therefore seemingly terminal, lax, many–flowered, shorter or longer than the leaves, 3–11 x 2·5–8 cm., 3–4 times branched. Flowers 4–merous. Sepals free, equal, broadly ovate, about 1–1·5 times as long as wide, 0·7–1·2 x 0·7–1 mm., rounded at the apex, ciliate, outside glabrous or nearly so, inside glabrous, without colleters. Corolla in the mature bud 2·5–4·5 x as long as the calyx 2·5–3 mm. long, and rounded at the apex, white, outside glabrous, inside densely pilose on the lobes (of which the apex sometimes glabrous); tube very short, 0·5–0·7 x as long as the calyx, 0·5–0·7 mm. long; lobes oblong, 4–5 x as long as the tube, 1·7–2 x as long as wide, 2–2·5 x 1·1–1·5 mm., acute, spreading. Stamens exserted; filaments about 1–1·5 x as long as the anthers, inserted at the mouth of the corolla tube; anthers orbicular or nearly so, 0·5–0·6 x 0·5 mm., glabrous. Pistil glabrous, 1–1–1–2 mm. long; ovary depressed–globose or–ovoid, 0·7 x 0·7 mm., 1–celled; style short, 0–4–0–5 mm. long; stigma capitate. One basal placenta with 2–9 ovules. Fruit small, globose or nearly so, 12 x 10–18 x 18 mm., one–seeded. Wall thin. Seed flattened, ellipsoid, 8–9 x 6–7 x 3 mm., pubescent (?). Testa thin sticking to the pulp.
