Achillea distans subsp. distans

Achillea dentifera DC. Fl. Fr. 6: 485. 1815
A perennial, with a creeping rootstock; stem 4-8 dm. high, sulcate, villous, more or less branched; leaves pubescent, bipinnately divided, the lower oblanceolate, petioled, 1-1.5 dm. long, 1-3 cm. wide, the upper lanceolate or oblong-lanceolate, 5-8 cm. long, 1.5-2 cm. wide; rachis with a broad dentatftwing; primary and secondary divisions obovate, more or less spreading, the latter usually dentate and the teeth callous-tipped and mucronate; heads very numerous, in compound corymbiform panicles; involucre rounded-campantdate, about 4 mm. high and as broad; bracts 20-25, in 4 series, villous, elliptic, rounded at the ape.x, with light-brown margins, the outer about half as long as the innermost; ray-flowers about 5; ligules white or pink, 2.5-3 mm. long, suborbicular, obscurely lobed; disk-flowers about 25; corollas yellowishwhite, 2.5 mm. long; achenes 2 mm. long, narrowly margined.
Type locality: Alps in Provence and Piedmont.
Distribution: Gaspe Peninsula (Quebec), Massachusetts, and New York; adventive from the Alps.