肥牛树 fei niu shu

Muricococcum sinense Chun & F. C. How, Acta Phytotax. Sin. 5: 15. 1956.

Trees, to 25 m tall. Branchlets pubescent when young, glabrescent. Stipules lanceolate, 1-2 mm; petiole 3-5 mm, pubescent; leaf blade elliptic or oblong-obovate, 6-15 × 3-9 cm, leathery, base broadly cuneate, with 2 small glands, margin repand or remotely serrulate, purplish, apex acuminate; lateral veins 5 or 6 pairs. Inflorescences unbranched or with 1 or 2 short branches, 1.5-2.5 cm; peduncle short, pubescent, with 1-3 female flowers and 1-3 9-13-flowered male glomerules. Male flowers subsessile; calyx lobes 3 or 4, ca. 3.5 mm, glabrous; stamens (3 or)4(or 8); filaments ca. 3 mm, base connate; pistillode columnar, 2-lobed. Female flowers: calyx deeply 5-lobed, ca. 2.5 mm; ovary globose, muricate; styles basally connate, upper part spreading, 2-lobed. Fruiting pedicel 2-3 mm; capsule 3-locular, ca. 1.5 cm in diam., densely prismatic muricate-echinate. Seeds subglobose, ca. 8 mm in diam., brownish marbled. Fl. Mar-Apr, fr. May-Jul.

Forests on limestone; 100-500 m. E and SE Guangxi, S Yunnan [N Vietnam].