Koilodepas hainanense (Merr.) Croizat

The inclusion by Croizat of Nephrostylus poilanei Gagnepain within his concept of Koilodepas hainanense is not accepted.

Trees or shrubs, 3-15 m tall, monoecious. Branchlets gray-yellowish stellate-tomentose. Stipules lanceolate, 5-7 mm; petiole 5-10 mm, tomentose; leaf blade elliptic or elliptic-lanceolate, 8-32 × 2-8.5 cm, thickly papery or thinly leathery, glabrous, drying dull brown, base broadly cuneate, obtuse, or slightly cordate, margin crenate-serrulate or crenate, apex acuminate. Inflorescence 4-10 cm, axis slender, tomentose; bracts broadly ovate, 1.5-2.5 mm; male glomerules well spaced, 5-11-flowered; female flowers 1-3, at base, sometimes absent. Male flowers: calyx 3- or 4-lobed, ca. 1 mm, stellate-pubescent; stamens 3-5; filaments short, base connate; pistillode globose, small. Female flowers: calyx 5- or 6-lobed, 3-4 mm, cup-shaped, lobes lanceolate or subovate, tomentose; ovary turbi-nate, tomentose; styles ca. 2.5 mm, upper part spreading, flattened, shortly 5-lobed, plumose. Fruiting pedicel 3-4 mm, tomentose; persistent calyx membranous, ca. 1.7 cm in diam., lobes unequal, sparsely stellate-pubescent; capsule subglobose, brownish, tomentose, ca. 1.7 cm in diam. Seeds subglobose, ca. 8 mm in diam., brown marbled. Fl. Mar-Apr, fr. Apr-May.

Hainan [N Vietnam].

Mountain slopes or valleys, forests, thickets, sometimes limestone hills; below 100-400 m.

Calpigyne hainanensis Merrill, J. Arnold Arbor. 6: 135. 1925; Koilodepas hainanense (Merrill) Croizat.

Koilodepas hainanense là một loài thực vật có hoa trong họ Đại kích. Loài này được (Merr.) Croizat mô tả khoa học đầu tiên năm 1942.

白茶树（学名：Koilodepas hainanense），为大戟科白茶树属下的一个植物种。