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FOC | Family List | FOC Vol. 9 | Rosaceae | Spiraea

11. Spiraea sargentiana Rehder in Sargent, Pl. Wilson. 1: 447. 1913.

茂汶绣线菊 mao wen xiu xian ju

Spiraea aemulans Rehder.

Shrubs to 2 m tall. Branchlets spreading, red-brown to gray-brown, slender, terete, sometimes angled, pubescent when young, finally glabrous; buds brown, ovoid, small, with several scales, pubescent initially, apex subobtuse or acute. Petiole 1–3 mm, villous; leaf blade adaxially dark green, elliptic-oblong to obovate-oblong, 1–3 × 0.7–1.2 cm, abaxially densely thinly villous, adaxially sparsely villous, base cuneate, margin with a few teeth apically, apex acute. Corymbs terminal on lateral branchlets, compound, 2.5–5 × 2.5–4 cm, many flowered; rachis and pedicels thinly villous; pedicels 2–5 mm; bracts long elliptic or oblong, 2–4 mm, thinly villous. Flowers 5–6 mm in diam. Hypanthium campanulate, villous abaxially. Sepals triangular, 1.5–2 mm, erect or reflexed in fruit, apex acute. Petals milky white, suborbicular, 2–3 × 2–2.5 mm, glabrous, base almost clawless, apex emarginate. Stamens ca. 20, nearly equaling petals. Disk annular, 10-lobed; lobes emarginate at apex. Carpels pubescent basally; styles shorter than stamens. Follicles spreading, glabrous or hairy on adaxial suture; styles terminal on abaxial side, slightly divergent. Fl. Jun–Jul, fr. Sep–Oct.

Thickets, open slopes, roadsides; 1000--2400 m. Henan, Hubei, Sichuan, Yunnan.


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