广椭绣线菊 guang tuo xiu xian ju

Shrubs 2–3 m tall. Branches spreading, slender; branchlets dark red-brown, turning brown or gray-brown when old, terete, glabrous; buds ovoid, small, with several scales, pubescent when young, finally glabrescent, apex obtuse. Petiole 3–5 mm, glabrous or puberulous; leaf blade abaxially greenish, adaxially dark green, broadly elliptic to oblong, rarely obovate, 1.5–3.5 × 1–2 cm, glabrous on both surfaces or sparsely pubescent on veins abaxially, base broadly cuneate or subrounded, margin entire, rarely with a few shallow teeth apically, apex obtuse, rarely acute. Corymbs terminal on lateral branchlets, compound, 3.5–6 × 3.5–5.5 cm, many flowered; rachis and pedicels glabrous; pedicels 4–7 mm; bracts elliptic to lanceolate, 7–10 × 1–1.5 mm, glabrous. Flowers 5–6 mm in diam. Hypanthium campanulate, glabrous abaxially. Sepals ovate-triangular, 1.5–2 mm, erect in fruit, apex acute. Petals white, broadly ovate or suborbicular, 1.5–2.5 × ca. 2 mm, glabrous, base shortly clawed, apex obtuse. Stamens ca. 20, subequaling to slightly longer than petals. Disk annular, with 10 thick lobes. Carpels pubescent; styles shorter than stamens. Follicles spreading, puberulous; styles terminal on abaxial side.

Mountain valleys, grasslands; 900--2500 m. Gansu, Henan, Hubei, Shaanxi, Sichuan, Xizang.