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Circaea alpina
Species of flowering plant in the willowherb family Onagraceae From Wikipedia, the free encyclopedia
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Circaea alpina, commonly called alpine enchanter's nightshade, small enchanter's nightshade, or dwarf enchanter's nightshade is a 10–30 cm tall perennial herb found in cool forests of the Northern Hemisphere.[2][3][4]
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Description
The leaves are opposite, ovate, 2–6 cm and coarsely dentate. The 1.5–4 cm (0.6–1.6 in) petioles have a wing beneath. The flowers and fruits are clustered near the top of the fruiting raceme; each raceme bears 15 or less white or pink flowers in mid-May through early September.[5][6][7] Each flower has two white to light pink petals 1–1.5 mm (0.04–0.06 in) long with two lobes. The two white sepals are 1–2 mm (0.04–0.08 in) long.[5] The fruit is a small bur with one seed. C. alpina can reproduce vegetatively and via stolons.[3]
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Distribution
In North America, Circaea alpina is distributed throughout all of Canada and North Carolina through Maine and New Mexico through Washington.[8][9] In Eurasia, the range of C. alpina includes Northern Europe south to Albania and Bulgaria and east to Korea and Japan.[2] C. alpina prefers a moist, upland habitat.[10] It is generally found in forests or near streams from sea level to 3,000 metres (10,000 ft).[8]
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Hybrids
Circaea alpina will hybridize with Circaea lutetiana producing sterile offspring that persists in vegetative colonies.[10]
References
External links
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