海南山胡椒 hai nan shan hu jiao

Lindera kwangtungensis (H. Liu) C. K. Allen f. robusta C. K. Allen, J. Arnold Arbor. 22: 3. 1941.

Evergreen trees, 5-10 m tall. Bark gray-brown, with longitudinal dehiscences. Branchlets black-brown, striate and corky-lenticellate; young branchlets stout, usually more than 3 mm in diam. Leaves alternate; petiole 1.5-2 cm, glabrous; leaf blade pale green abaxially, green adaxially, brown-gray when dry, oblong, 8-16 × 2.5-2.6 cm, leathery, glabrous on both surfaces, pinninerved, lateral veins 4 or 5 pairs, distinctly convex abaxially and slightly convex adaxially, midrib distinctly convex abaxially, slightly concave adaxially, reticulate veins rather thick, sometimes indistinct abaxially, base cuneate, revolute on margin, apex acuminate. Umbels 2-5, inserted at apex of axillary short branchlets; peduncles 1-1.2 cm, glabrous; involucral bracts 4, 7-9-flowered inside. Pedicels ca. 2 mm, densely white or brownish pubescent. Male flowers: tepals equal in length, oblong, ca. 3.5 × 1 mm, apex rounded, white pubescent on both surfaces, rather dense outside, densely hyaline glandular punctate; anthers of stamens triangular; filaments pubescent, ca. 3 mm in 1st and 3rd whorls, ca. 4 mm in 2nd whorl, 2-glandular below middle; glands elliptic, shortly stipitate; reduced pistil small. Female flowers: perianth tube ca. 1/2 length of tepals; tepals narrowly elliptic, apex acuminate, ca. 1.5 mm, ca. 0.6 mm wide in outer whorl and ca. 0.4 mm wide in inner whorl; reduced stamens ligulate, ca. 1.5 mm in 1st and 2nd whorls, 2-3 mm in 3rd whorl, 2-glandular at middle of filaments; glands elliptic, ca. 1.5 mm; ovary laxly pubescent; style ca. 4 mm; stigma with subglobose minute papillae. Fruits globose, ca. 6 mm in diam.

● Sparse forests on mountain slopes. Hainan.