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

12. Zanthoxylum khasianum J. D. Hooker, Fl. Brit. India. 1: 494. 1875.

云南花椒 yun nan hua jiao

Zanthoxylum yunnanense C. C. Huang.

Shrubs or trees, to 3 m tall. Branchlets gray, with prickles. Young branchlets, inflorescences, leaf rachises, and adaxial surface of leaflet blades with long grayish yellow trichomes. Leaves 5-13-foliolate; petiolules 4-10 mm, winged; leaflet blades alternate or rarely subopposite, ovate to elliptic, asymmetric, 3.5-9 × 2-4 cm, papery, midvein adaxially impressed, secondary veins 10-16 on each side of midvein, base cuneate, margin crenulate or apically crenulate-serrulate, apex caudate. Inflorescences terminal or axillary, thyrsiform; bracts minute. Flowers 4-merous. Perianth in 2 series. Sepals ovate, ca. 0.5 mm, margin ciliolate. Petals long elliptic, 2-3 mm. Female flowers: staminodes ca. 1 mm. Fruit pedicel 7-10 mm, villous; follicles oblique, 5-6 mm, apex beaked. Fl. May, fr. Jul-Aug.

Hillside thickets and open forests; 1500-2500 m. W Yunnan [India].

Hartley (J. Arnold Arbor. 47: 177. 1966) placed Zanthoxylum khasianum and Z. yunnanense in synonymy of Z. scandens.


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