Local Descriptions
General Information
Biennial or short-lived perennial 2–10 dm, ± fibrous- rooted to evidently taprooted, simple to the infl, thinly floccose-tomentose at first, generally glabrous or nearly so by anthesis, except often in the infl; lvs equably distributed, mostly 2–3 times pinnatifid with ± pointed segments or teeth, 4–20 × 2–6 cm, the lower petiolate and often deciduous, sometimes less dissected than the others, the upper becoming sessile; heads ± numerous in a short broad infl; disk 7–10 mm wide; invol 4 mm, its bracts ca 13, over 1 mm wide, generally dark-tipped; rays 4–8 mm; achenes minutely hairy; 2n=40, 80. Native of Europe, now established as a weed in dry soil and waste places in parts of n. U.S. and adj. Can., in our range chiefly from N.J. to se. Can. July–Oct.
Provided by: [C].Northeastern FloraMorphology
30–100 cm hoch. Blätter kahl oder zerstreut spinnwebig, ungleich geteilt: obere fiederschnittig, mit rechtwinklig abstehenden oder nach vorn gerichteten Abschnitten, untere (zur Blütezeit oft verdorrt) mit grossem ovalem Endabschnitt oder ungete
Provided by: [B].Flora HelveticaEcology
6–8. Weiden, Wald- und Strassenränder, kollin-montan(-subalpin). J, M, AN, zerstreut AS.
Provided by: [B].Flora HelveticaNortheastern Flora
General InformationBiennial or short-lived perennial 2–10 dm, ± fibrous- rooted to evidently taprooted, simple to the infl, thinly floccose-tomentose at first, generally glabrous or nearly so by anthesis, except often in the infl; lvs equably distributed, mostly 2–3 times pinnatifid with ± pointed segments or teeth, 4–20 × 2–6 cm, the lower petiolate and often deciduous, sometimes less dissected than the others, the upper becoming sessile; heads ± numerous in a short broad infl; disk 7–10 mm wide; invol 4 mm, its bracts ca 13, over 1 mm wide, generally dark-tipped; rays 4–8 mm; achenes minutely hairy; 2n=40, 80. Native of Europe, now established as a weed in dry soil and waste places in parts of n. U.S. and adj. Can., in our range chiefly from N.J. to se. Can. July–Oct.
Flora Helvetica
Morphology30–100 cm hoch. Blätter kahl oder zerstreut spinnwebig, ungleich geteilt: obere fiederschnittig, mit rechtwinklig abstehenden oder nach vorn gerichteten Abschnitten, untere (zur Blütezeit oft verdorrt) mit grossem ovalem Endabschnitt oder ungete
6–8. Weiden, Wald- und Strassenränder, kollin-montan(-subalpin). J, M, AN, zerstreut AS.
