Plants dioecious or polygamodioecious. Rootstock erect or spreading, to 1-5 cm diam. Floral stems deciduous, 3-50 × 0.1-0.7 cm. Leaf blades usually bright green, sometimes glaucous, elliptic to ovate or oblanceolate to linear, 0.5-5.5 × 0.2-1.5(-2) cm, margins entire or toothed, apex acute to obtuse. Inflorescences corymbose cymes, dense, to 250-flowered, to 8 cm diam. Pedicels ca. 2 mm. Flowers mostly unisexual, 4-5-merous; sepals lanceolate to ovate, 1.5-3 mm; petals mostly dark red, sometimes yellowish at base or yellow with apical 1/3 red, elliptic-oblong, 1.5-5 mm, shorter than stamens, in staminate flowers spreading, hooded, 1.3-1.7 mm wide, in pistillate erect. Follicles 4-9 mm, beaks spreading. Seeds winged, pyriform or oblanceoloid, 1.1-2.8 mm. 2n = 36.
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A succulent herb. It forms tufts and keeps growing from year to year. The roots are thick and fleshy. The stems are 15-30 cm tall. The leaves are oblong and have teeth along the edge.
Cliffs and rocky slopes, alpine meadows, tundra; at elevations up to 2,000 metres, occasionally to 4,000 metres.
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It is a cold temperate plant.
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