Vasilis Teodoridis:
Rutaceae | Zanthoxylum
23. Zanthoxylum avicennae (Lamarck) Candolle; Prodr. 1: 726. 1824.
??? le dang hua jiao
Fagara avicennae Lamarck; Encycl. 2: 445. 1788; Zanthoxylum avicennae var. tonkinense Pierre; Z. avicennae var. touranense Pierre; Z. lentiscifolium Champion ex Bentham.
Trees to 15 m tall; deciduous. Branchlets and leaves glabrous; with prickles. Leaves 11-21-foliolate; rachis winged; leaflet blades opposite or rarely subopposite; obliquely ovate; rhomboidal; obovate; or falcate; 2.5-7 x 1-3 cm; oil glands visible on fresh leaves or inconspicuous; margin entire or apically crenate; apex mucronate to blunt. Inflorescences terminal; many flowered; rachis purplish red. Flowers 5-merous. Pedicel purplish red. Perianth in 2 series. Sepals green; broadly ovate. Petals yellowish white; ca. 2.5 mm. Male flowers: stamens 5; rudimentary gynoecium disciform; 2-lobed. Female flowers: carpels 2(or 3); staminodes small. Fruit pedicel 3-6 mm; follicles pale purplish red; 4-5 mm in diam.; oil glands numerous; large; and slightly protruding; apex not beaked. Seeds 3.5-4.5 mm in diam. Fl. Jun-Aug; fr. Oct-Dec.
Secondary forests in lowland flat areas; hillsides; valleys; 400-700 m. S Fujian; Guangdong; Guangxi; Hainan; S Yunnan [India; Indonesia; Malaysia; Philippines; Thailand; Vietnam].