Petasites frigidus
Family: Asteraceae
Arctic sweet-colt's-foot, northern sweet-colt's-foot
Petasites frigidus image
Derek Anderson  
Etymology: Petasites: from Plants: erect, perennial, 4"-20" tall, woolly forb; from clone-forming rhizomes
Leaves: basal, up to 15" wide, 5-11 palmate lobes, rounded to kidney-shaped in outline, whitened beneath, on long stalks
Flowers: head 1/2" long with white to pinkish disk flowers; inflorescence with heads in an open, branched cluster; blooms April-June
Fruits: dry seed on fluffy pappus
Habitat: moderate moisture to wet; forests, meadows