圆枝子楝树 yuan zhi zi lian shu

Trees, to 30 m tall. Branchlets terete, grayish brown tomentose. Petiole 6-10 mm, tomentose; leaf blade elliptic to obovate, 7-8 × 2.5-3.7 cm, leathery, abaxially yellowish green when dry, adaxially dark green and slightly shiny when dry, both surfaces at first pubescent but glabrescent, secondary veins 12-15 on each side of midvein, at an angle of ca. 75° from midvein, and obscure, intramarginal veins ca. 1 mm from margin, base cuneate, apex acute. Inflorescences in axil of terminal leaves, cymose, 2.5-4 cm, 3-8-flowered; bracts leaflike, oblong, 10-15 × 5-8 mm. Flowers ca. 1.5 cm in diam.; bracteoles lanceolate, ca. 3 mm, pubescent. Hypanthium obovoid, ca. 2.5 mm in diam., tomentose. Calyx lobes 5, suborbicular, ca. 2.5 mm, apex rounded. Petals 5, white, obovate, ca. 6 mm, glandular, apex rounded. Stamens red, longer than petals; filaments pubescent. Ovary 11- or 12-loculed. Style as long as stamens; stigma expanded. Fruit subglobose, ca. 1 cm in diam., 11- or 12-furrowed, pubescent, 11- or 12-loculed. Fl. Jul.

● S Hainan.

"Pyrenocarpa teretis" (Hung T. Chang & R. H. Miao, Acta Sci. Nat. Univ. Sunyatseni 1975: 64. 1975) belongs here but was not validly published because the genus name "Pyrenocarpa" was not validly published (see comment following genus description above).