刺花椒 ci hua jiao

Zanthoxylum acanthopodium var. oligotrichum Z. M. Tan; Z. acanthopodium var. timbor J. D. Hooker; Z. acanthopodium var. villosum C. C. Huang.

Shrubs, woody climbers, or trees to 6 m tall. Bark grayish black. Branchlets rust-colored pubescent to nearly glabrous, usually with prickles. Leaves 3-9-foliolate; rachis wings to 3 mm on each side; leaflet blades sessile, opposite, ovate-elliptic to lanceolate, 6-10 × 2-4 cm, papery, both surfaces glabrous to rust-colored pubescent, oil glands inconspicuous, secondary veins 10-28 on each side of midvein and evident, margin entire or crenate. Inflorescences axillary. Perianth in 2 irregular series or 1 series, with 6-8 ± undifferentiated tepals. Tepals pale yellowish green, narrowly lanceolate, ca. 1.5 mm. Male flowers: stamens 5 or 6; anthers reddish purple before anthesis; disk pulvinate; rudimentary carpels 2-5. Female flowers: rudimentary stamens lacking; carpels 2-5, sparsely hirsute to glabrous, abaxially often with a conspicuous oil gland; styles recurved. Fruit follicles usually purplish red, ca. 4 mm in diam., glabrous or sometimes with sparse trichomes, oil glands large and protruding. Seeds ca. 3 mm in diam. Fl. Apr-May, fr. Sep-Oct. 2n = 64.

Upland open forests and thickets; 1400-3200 m. W Guangxi, Guizhou, Sichuan, Xizang, Yunnan [Bangladesh, Bhutan, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand, Vietnam].