台灣植物誌 第二版 Flora of Taiwan, 2nd edition Vol. 3
A shrub, dioecious, the branchlets hirsute and sharply prickly. Leaves imparipinnate, the rachis narrowly winged; leaflets sessile, 3-4 pairs, opposite, ovate oblong, 2.5-3 cm long, 8-12 mm broad, acute or obtuse apex, obtuse at base, coarsely or shallowly serrate, the lateral veins 6-8 on each side of the midrib, the midrib impressed above, elevated beneath; petioles up to 2-3 cm long. Flowers in slender axillary or terminal cymes, the rachis slender. Male flowers: sepals 5, glabrous, triangular-ovate, sharply acute at the apex, glabrous on both surfaces; petals wanting; stamens 5, much longer than sepals; rudimentary carpel conical. Fruit of 2 carpels, ovoid, about 4 mm across; seeds black, shining.
Central China. Taiwan, at low and medium altitudes in the central part.
HSINCHU: Jonfen, Shimada 14207. MIAOLI: Tungshan, Kao 5675. TAICHUNG: Houli, Yasukawa 14203.
9. Zanthoxylum wutaiense Chen in Taiwan Sci. 26(34): 56. f. 1. 1972; Chang in Fl. Taiwan 3: 537. 1977. 屏東花椒 Pl.279
A shrub; branchlets glabrous, often with hooked prickles. Leaves imparipinnate, the upper part of rachis slightly winged; leaflets of 2-6 pairs, sessile, opposite, coriaceous, oblong to oblong-lanceolate, 3-10 cm long, 1-2 cm broad, the terminal one largest, acuminate at apex, attenuate or cuneate at base, the lateral veins 7-16 on each side of the midrib, distinct, the midrib elevated on both surfaces, the margins crenate, pellucid-dotted. Flowers dioecious, yellow, axillary, in panicles, about 1 mm long; pedicels 3 mm long. Male flowers: sepals 5-8, narrowly oblong, glabrous; petals wanting; stamens 5-8, exserted, the anthers introrse; rudimentary ovary present. Female flowers: ovary ovoid-oblong, with appendage; styles short, the stigma capitate. Fruit ovoid, of 1-2 carpels, about 5 mm across, each vertically dehiscent into valves.
Endemic. Known only from Pingtung.
PINGTUNG: Wutai, Chen 2548, Chang 7251.