1. Koilodepas hainanense (Merrill) Airy Shaw, Kew Bull. 14: 384. 1960.
白茶树 bai cha shu
Calpigyne hainanensis Merrill, J. Arnold Arbor. 6: 135. 1925; Koilodepas hainanense (Merrill) Croizat.
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.
Mountain slopes or valleys, forests, thickets, sometimes limestone hills; below 100-400 m. Hainan [N Vietnam].
The inclusion by Croizat of Nephrostylus poilanei Gagnepain within his concept of Koilodepas hainanense is not accepted.