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FOC | Family List | FOC Vol. 11 | Rutaceae | Zanthoxylum

20. Zanthoxylum oxyphyllum Edgeworth, Trans. Linn. Soc. London. 20: 42. 1846.

尖叶花椒 jian ye hua jiao

Fagara oxyphylla (Edgeworth) Engler; Zanthoxylum alpinum C. C. Huang; Z. taliense C. C. Huang; Z. tibetanum C. C. Huang.

Shrubs or small trees. Branchlets and leaf rachises with prickles. Leaf rachises adaxially and midvein of leaflet blades adaxially pubescent. Old leaves subglabrous. Leaves 11-19-foliolate; petiolules to 2 mm; leaflet blades alternate or opposite, lanceolate or rarely ovate, 5-12 × 1.5-2.5 cm, abaxially gray when dry, oil glands numerous, midvein impressed adaxially, secondary veins anastomosing near margin, reticulate veinlets ridged when dry, base cuneate, margin serrulate, apex acuminate. Inflorescences terminal, cymose-corymbose, to 30-flowered. Perianth in 2 series. Sepals 4, purplish green. Petals ca. 3 mm. Male flowers: rudimentary gynoecium 2-4-parted, lobes linear. Fruit pedicel 1-1.5 cm, 1-1.5 mm in diam.; follicles purplish red, 6-7 mm, oil glands impressed when dry, apex beaked. Seeds ca. 5 mm in diam. Fl. May-Jun, fr. Sep-Oct. 2n = 72.

Open forests, forest margins; 1800-2900 m. S Xizang, W Yunnan [Bhutan, NE India, Myanmar, Nepal].


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