Rhamnus arguta Maxim.

Shrubs or small trees, dioecious, 2-3 m tall, spinose or unarmed. Bark gray-brown; branchlets opposite or subopposite, rarely alternate, dark purple or purple-red, smooth, glabrous, sometimes terminating in a spine; terminal buds purple-black, narrowly ovoid, large, with few scales, scale margin ciliate. Leaves subopposite to opposite, or alternate, fascicled on short shoots; petiole red or red-purple, 1-3(-4) cm, adaxially canaliculate, ± puberulent; leaf blade ovate-cordate or ovate-orbicular, rarely suborbicular or elliptic, 1.5-6(-8) × 1.5-4.5(-6) cm, thinly papery or papery, glabrous or leaves abaxially or veins and petioles puberulent, lateral veins 4 or 5 pairs, slightly prominent on both surfaces, base cordate or rounded, margin densely sharply serrate, apex obtuse-rounded or acute. Flowers unisexual, 4-merous. Male flowers 1-20-fascicled at ends of short shoots or in leaf axils of lower part of long shoots; pedicels 8-12 mm. Female flowers few fascicled in leaf axils; pedicels ca. 2 cm; ovary globose, 3- or 4-loculed; style 3- or 4-cleft. Drupe black at maturity, globose or obovoid-globose, 6-7 mm in diam., with persistent calyx tube at base, with 3 or 4 stones; fruiting pedicel 1.3-2.3 cm, glabrous. Seeds oblong-ovoid, abaxially with margined furrow extending over 4/5 of length. Fl. May-Jun, fr. Jun-Sep. 2n = 24*.

Hebei, Heilongjiang, Liaoning, Shaanxi, Shandong, Shanxi.

● Forests and thickets on slopes; below 2000 m.

Rhamnus arguta, the sharp-tooth buckthorn, is a plant which has become naturalized in Indiana, USA.

Rhamnus arguta là một loài thực vật có hoa trong họ Táo. Loài này được Maxim. miêu tả khoa học đầu tiên năm 1866.

锐齿鼠李（学名：Rhamnus arguta），为鼠李科鼠李属下的一个植物种。

灌木或小乔木，生于山坡杂木林中。常见于中国东北、北京、山西、山东、陕西、河南、甘肃等地。朝鲜、日本、俄罗斯等国也行分布。