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4. SORBARIA (Seringe) A. Braun in Ascherson, Fl. Brandenburg. 1: 177. 1860.
[nom. cons.]

珍珠梅属 zhen zhu mei shu

Gu Cuizhi (Ku Tsue-chih); Crinan Alexander

Spiraea Linnaeus sect. Sorbaria Seringe, Prodr. 2: 545. 1825; Schizonotus Lindley, nom. rej.

Shrubs deciduous. Branchlets yellow to green when young, later dark reddish or yellowish brown, terete; buds ovoid to cylindric, with several exposed, alternate scales, glabrous or slightly pubescent at apex. Leaves alternate, stipulate, pinnate; leaflets opposite, sessile or subsessile, doubly serrate. Inflorescence a large, terminal panicle. Flowers small, numerous. Hypanthium shallowly cupular. Sepals 5, reflexed, short, broad, persistent. Petals 5, imbricate, white, ovate to orbicular, base cuneate, apex obtuse. Stamens 20–50, nearly equaling or longer than petals. Carpels 5, opposite sepals, basally connate, glabrous or subglabrous. Follicles glabrous, dehiscent along adaxial suture. Seeds several.

About nine species: temperate Asia; three species (two endemic) in China.

Rahn, K. 1989. A survey of the genus Sorbaria (Rosaceae). - Nord. J. Bot. 8: 557–563.

1 Panicles lax, with spreading branches; fruiting pedicels recurved, pendulous.   3 S. arborea
+ Panicles rather dense, with erect branches; fruiting pedicels erect.   (2)
2 (1) Stamens 40–50, longer than petals; style terminal.   1 S. sorbifolia
+ Stamens ca. 20, equaling or shorter than petals; style lateral.   2 S. kirilowii

Lower Taxa


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