Spiraea kwangsiensis T. T. Yu

Shrubs erect or spreading, to 1 m tall. Branchlets slender, terete, dark red-brown and pubescent when young, subglabrous and grayish-brown when old; buds ovoid, with several brown scales. Petiole 2–4 mm, usually glabrous; leaf blades unequal, obovate, elliptic, or suborbicular, larger ones 10–18 × 8–14 mm, smaller ones 7–10 × 4–5 mm, glabrous on both surfaces, lateral veins 3 or 4 on each side of midvein, base cuneate to rounded, margin obtusely dentate above middle or near apex, sometimes slightly 3-lobed (entire or subentire on leaves on flowering branchlets), apex obtuse. Umbels sessile or shortly pedunculate, 3–8-flowered, with several clustered, unequal leaves at base; pedicels 5–9 mm, glabrous; bracts linear, glabrous. Flowers 5–7 mm in diam. Hypanthium campanulate, glabrous abaxially. Sepals triangular, erect and persistent in fruit, apex acute. Petals white, broadly obovate, 2–3 mm, about as broad as long, base shortly clawed, apex emarginate or obtuse. Stamens ca. 20, shorter than petals. Disk annular, densely toothed, sometimes 10-lobed. Styles shorter than stamens. Follicles spreading, pubescent on adaxial suture; styles terminal on abaxial side, slightly divergent or suberect. Fl. Mar–Apr, fr. Apr–Jun.

Guangxi.

Bare cliffs, rocky roadsides, sunny places; ca. 600 m.