总序山柑 zong xu shan gan

Shrubs 2-3 m tall. Twigs tan-colored when dry, glabrous or new branches with distant appressed short pubescence but immediately glabrescent, with cataphylls at base, without stipular spines or sometimes with ascending ca. 1 mm spines. Petiole 5-8 mm, stout, axil often with subulate bracts on sterile twigs; leaf blade oblong to oblong-lanceolate, 12-26 × 3.5-8.5 cm, subleathery, midvein abaxially raised and adaxially deeply impressed, secondary veins 10-12 on each side of midvein and adaxially impressed, reticulate veins obvious, base cuneate, apex often acuminate. Inflorescences terminal or nearly so, racemes, 1- or 2-fascicled, 10-25 cm, 15-30-flowered; peduncle ca. 1 cm, base covered by dense subulate bracts; rachis slender, with decurrent vertical ribs, with dense appressed short rust-colored pubescence, apex with many fascicular subulate scales. Pedicel 1-2.5 cm, pubescent like rachis; bracts subulate, 1.5-2 mm, with scattered simple trichomes especially distally. Sepals ca. 3.5 × 1.5-2 mm, outside sparsely shortly pubescent; sepals of outer whorl ovate, inside concave to navicular; sepals of inner whorl elliptic. Petals white, 3-4 × 1.5-2 mm; anterior 2 petals elliptic, slightly smaller, basally and margin often shortly pubescent; posterior 2 petals ovate, slightly larger, basally with speckles. Stamens 12-18; filaments 5-6 mm; anthers ca. 1.2 mm. Gynophore 6-8[-11] mm; ovary ovoid, ca. 1.5 × 1 mm, glabrous, 1-loculed; placentae 2, each with several ovules. Fruit red, globose, 6-9 mm in diam. Seeds 1 or 2 per fruit, 4-5 mm. Fl. (Jan-)Mar-Apr, fr. Aug-Sep.

Valley forests; 500-1200 m. Guangdong, Hainan, Xizang, S and SE Yunnan [Bhutan, NE India (Assam), Laos, Myanmar, Thailand].