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

24. Zanthoxylum micranthum Hemsley, Ann. Bot. (Oxford). 9: 147. 1895.

小花花椒 xiao hua hua jiao

Fagara biondii Pampanini; F. micrantha (Hemsley) Engler.

Trees to 15 m tall, deciduous. Branchlets glabrous, with prickles. Leaves 9-17-foliolate; petiolules 1.5-5 mm; leaflet blades opposite or on basal part of rachis subopposite, lanceolate, 5-8 × 1-3 cm, oil glands numerous, midvein impressed, secondary veins 8-12 on each side of midvein, base symmetrically or obliquely rounded to broadly cuneate, margin crenate, apex acuminate. Inflorescences terminal, many flowered. Flowers 5-merous. Perianth in 2 series. Sepals broadly ovate, ca. 0.3 mm wide. Petals pale yellowish white, 1.5-2 mm. Male flowers: stamens 5, ca. 3 mm; rudimentary gynoecium disciform, 3-lobed or not divided. Female flowers 3(or 4)-carpelled. Fruit follicles pale purplish red but pale yellow to grayish brown when dry, ca. 5 mm in diam., oil glands small, apex not beaked. Seeds to 4 mm. Fl. Jul-Aug, fr. Oct-Nov.

● Hillside open forests; 300-1200 m. Guizhou, SW Henan, W Hubei, Hunan, Sichuan, Yunnan.


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