P20150305-0123—Petasites frigidus var palmatus—RPBG

Petasites frigidus var. palmatus—arctic sweet coltsfoot. Found in every Canadian province, New England; the northern tier of the lower 48 states; and along the coastal ranges of Oregon and California south to Monterey County; and, according to recent interpretations, to northern Eurasia. An extract from plants of the genus, know as butterbur, is widely available in herbal medicine shops. Photographed at Regional Parks Botanic Garden located in Tilden Regional Park near Berkeley, CA.

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