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

68. Spiraea hailarensis Liou, Ill. Fl. Lign. Pl. N. E. China. 281, 563. 1955.

海拉尔绣线菊 hai la er xin xian ju

Shrubs 0.5–1 m tall. Branchlets brownish to purple-brown, terete, densely pubescent when young; buds ovoid, with several brown scales, apex obtuse or acute. Petiole very short or almost absent; leaf blade gray-green on both surfaces, oblong or obovate-oblong, 4–14 × 3–5 mm, abaxially slightly pubescent, adaxially glabrous, indistinctly pinnately veined, base cuneate, margin entire (or on sterile branchlets 3- or 4-serrate), apex obtuse or acute. Umbels usually sessile, rarely shortly pedunculate, 10–15 mm in diam., 3–7-flowered; pedicels 8–10 mm, glabrous. Flowers 5–6 mm in diam. Hypanthium campanulate, glabrous abaxially. Sepals triangular, erect or reflexed in fruit, apex acute. Petals white, suborbicular. Stamens ca. 20. Disk annular, 10-lobed; lobes obtuse at apex, rarely emarginate. Styles shorter than stamens. Follicles slightly spreading, pubescent; styles terminal on abaxial side, erect or somewhat divergent. Fl. May–Jun, fr. Jun–Jul.

Hills; ca. 600 m. Gansu, Nei Mongol.


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