An evergreen shrub or small tree up to 8 m tall; wood and leaves highly aromatic. Leaves alternate, simple, narrowly ovate to lanceolate, 4—12 cm x 1.5—5 cm, base cuneate, tapering, apex blunt, entire, coriaceous; petiole 0.7—2 cm long; stipules absent. Flowers axillary, sometimes solitary, usually crowded, bisexual, regular, 2.5—3 cm in diameter, perianth lobes 12—15(—30), arranged spirally, slender, acute, 3 mm wide, pale yellow to white; pedicel 0.5—1.5 cm long; stamens (16—)18—20(—25), arranged spirally; carpels 7—9(—10), arranged in a single row. Fruit a capsule-like follicetum, 2.5—3 cm in diameter, consisting of an aggregate of 7—8 follicles, arranged around a central axis in the shape of a star; each follicle boat-shaped, 1-seeded. Seed obovate-ellipsoid, 6—7 mm long, smooth, glossy, yellowish, containing copious endosperm. |