Cleistanthus petelotii Merr. ex Croizat

Trees 7-18 m tall, glabrous throughout. Petiole 5-8 mm, transversely striate when dry; leaf blade ovate, elliptic, or oblong, 8-19 × 3-8 cm, leathery, base obtuse or rounded, margin revolute, apex shortly acuminate; lateral veins 6 or 7 pairs, curved-ascending, anastomosing near margin, reticulate veins prominent. Flowers ca. 5 × 4.5 mm in diam., several grouped into axillary glomerules. Sepals 5, ovate-triangular, ca. 3 × 1 mm. Petals 5, obovate, ca. 0.5 mm. Stamens 5, ca. 2 mm; filaments connate below middle into a cylinder surrounding rudimentary ovary; anthers ovate-triangular, ca. 0.6 mm, connective triangular; disk scales obovate, ca. 1 mm. Rudimentary ovary with trifid apex. Female flowers: sepals and petals as in male; disk urceolate or cylindric, ca. 2 mm high, surrounding ovary, apex with minute ligules; ovary globose, smooth; styles 3. Cap sules subglobose, 11-15 × ca. 15 mm, epicarps reticulate-rugose; carpopodium 3-5 mm. Seeds ovate. Fl. Apr-Jun, fr. May-Nov.

W Guangxi [N Vietnam].

Limestone forests; 200-400 m.