华北珍珠梅 hu bei zhen zhu mei

Spiraea kirilowii Regel & Tiling, Fl. Ajan. 81. 1858; Sorbaria sorbifolia (Linnaeus) A. Brown var. kirilowii (Regel & Tiling) Ito.

Shrubs to 3 m tall. Branches erect; branchlets glabrous; buds red-brown. Stipules linear-lanceolate, 8–15 mm, glabrous or subglabrous, apex obtuse or acute. Leaflets 13–21, lanceolate to oblong-lanceolate, 4–7 × 1.5–2 cm, glabrous on both surfaces or abaxially pubescent in vein axils, lateral veins in 15–23 pairs, reticulate veins conspicuous, base cuneate to rounded, apex acuminate or caudate. Panicle dense, 7–11 × 5–20 cm; peduncle and pedicels glabrous; bracts lanceolate, 2–5 mm, glabrous, apex acuminate. Flowers 5–7 mm in diam.; pedicel 3–4 mm. Hypanthium shallowly cupular, glabrous on both surfaces. Sepals persistent and reflexed (rarely spreading) in fruit, ovate to oblong, glabrous, apex obtuse. Petals white, obovate or broadly ovate, 4–5 mm. Stamens ca. 20, slightly shorter than or equaling petals. Style lateral. Follicles cylindric, ca. 3 mm; fruiting pedicel erect. Fl. Jun–Jul, fr. Sep–Oct.

Slopes in open mixed forests; 200--1300 m. Gansu, Hebei, Henan, Nei Mongol, Qinghai, Shaanxi, Shandong, Shanxi.