About Achillea alpina L.
Achillea alpina L. is a perennial herb that can grow up to 80 cm (2 feet) tall. Its flowers range from white to pale violet, and include both ray florets and disc florets. Its foliage is simply pinnatifid, with narrow, closely arranged segments. The currently recognized infraspecific taxa of this species are: Achillea alpina subsp. camtschatica (Heimerl) Kitam., Achillea alpina var. discoidea (Regel) Kitam., Achillea alpina subsp. japonica (Heimerl) Kitam., Achillea alpina subsp. pulchra (Koidz.) Kitam., and Achillea alpina subsp. subcartilaginea (Heimerl) Kitam. This species grows in thickets and along shorelines in northwestern North America. Its southernmost distribution reaches northern Minnesota near the Canadian border, where isolated populations grow in peat meadows at the margins of aspen stands, open woods, woodland edges, stream banks, and roadsides. Achillea alpina was listed as a threatened species in Minnesota in 1996.
