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Asarum canadense L. - Aristolochiaceae - American wild ginger, Canada snakeroot, Kanadische Haselwurz
Prostrate evergreen perennial, up to 10cm high, native to eastern North America; slender rhizome with the smell of ginger; stems short, developing in spring, each branch with one leave; leaves dark green, reniform (kidney-shaped), downy at both sides, 5-20cm across; flowers on short stalkes near ground, solitary, dark purple-brown, campanulate; fruit a coriaceous, 6-celled capsule.
„Native Americans used Asarum canadense medicinally to treat flux, poor digestion, swollen breasts, coughs and colds, typhus and scarlet fever, nerves, sore throats, cramps, heaves, earaches, headaches, convulsions, asthma, tuberculosis, urinary disorders, and venereal disease; as a stimulant, a seasoning, and a charm; and to strengthen other herbal concoctions and heighten appetite (D.E. Moerman 1986).“
http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233500168
Curtis’s Botanical Magazine, vol.54 [ser.2, vol.1] t.2769 (1827) [W.J.Hooker]
http://plantgenera.org/species.php?id_species=95831