Rhodiola rosea L.
  • Sp. Pl.
  • Roseroot, rosewort

This is a synonym of Sedum roseum (L.) Scop.
Notes: More details could be found in The Plant List v.1.1. Originally in The Plant List v.1.0

General Description

Roots erect, robust. Caudex short. Caudex leaves scalelike. Flowering stems 10-30 cm. Stem leaves remote, sessile, oblong, elliptic-oblanceolate, or obovate, 0.7-3.5 × 0.5-1.8 cm, base subamplexicaul, margin entire, apically few dentate, or serrate, apex acute to acuminate. Inflorescences corymbiform or capitate, compact, ca. 2 × 3-6 cm, many flowered. Flowers unisexual, male ones unequally 4-merous. Sepals lanceolate-linear, ca. 1 mm, apex obtuse. Petals greenish yellow or yellow, linear-oblanceolate to oblong, ca. 3 mm, apex obtuse. Stamens 8, longer than petals. Nectar scales oblong, apically slightly narrowed, 1-1.5 × ca. 0.6 mm, apex emarginate. Carpels of female flowers erect. Styles recurved. Follicles lanceolate to linear-lanceolate, 6-8 mm, apical beak ca. 1 mm. Seeds lanceolate, ca. 2 mm, winged at one end. Fl. Apr-Aug, fr. Jul-Sep.

Plants mostly dioecious. Rootstock erect or spreading, 0.5-2.5 cm diam. Floral stems deciduous, 5-40 × 0.2-0.6 cm. Leaf blades pale green, usually glaucous, ovate to obovate or oblong, 1-5 × 0.4-1.5 cm, margins entire or dentate, apex acute to obtuse. Inflorescences corymbose cymes, dense, to 150-flowered, to 6.5 cm diam. Pedicels ca. 3 mm. Flowers mostly unisexual, 4(-5)-merous; sepals linear-oblong or lanceolate, unequal, 1-2.5 mm; petals pale yellow to greenish yellow, sometimes red at tips, oblong, 1-3.5 mm, shorter than stamens, in staminate flowers spreading, hooded, 0.7-1.1 mm wide, in pistillate erect. Follicles 4-9 mm; beaks spreading. Seeds winged at both ends, pyriform, 1.7-2.2 mm. 2n = 22.

Common Names

Roseroot, rosewort

 Information From

World Flora Online Data. 2017.
  • A CC0 1.0 Universal (CC0 1.0).
Flora Of CHina @ efloras.org
'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  • B Missouri Botanical Garden
Flora of North America @ efloras.org
'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  • C Flora of North America Association