Distribution
Austria (introduced), Georgia (introduced), Poland (introduced), Ukraine (introduced), United States of America (introduced)

Native to: Argentina Northeast, Argentina Northwest, Bolivia, Brazil South, Brazil Southeast, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Peru, Venezuela.
Introduced into: Alabama, Alberta, Arkansas, Austria, Azores, Bahamas, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Cameroon, Canary Is., Cape Provinces, Cape Verde, Central African Repu, China Southeast, Colorado, Connecticut, Corse, Cyprus, Czechoslovakia, Delaware, Denmark, District of Columbia, East Aegean Is., East Himalaya, Eritrea, Ethiopia, Finland, Florida, France, Georgia, Germany, Great Britain, Greece, Gulf of Guinea Is., Hawaii, Hungary, Illinois, Indiana, Iowa, Ireland, Italy, Jamaica, Japan, Kansas, Kentucky, Korea, Krym, KwaZulu-Natal, Leeward Is., Lesotho, Madeira, Maine, Manitoba, Maryland, Masachusettes, Michigan, Minnesota, Missouri, Morocco, Nebraska, Nepal, Netherlands, New Brunswick, New Hampshire, New Jersey, New York, New Zealand North, North Carolina, North Caucasus, North Dakota, Northern Provinces, Northwest European R, Norway, Nova Scotia, Ohio, Ontario, Pennsylvania, Poland, Portugal, Primorye, Prince Edward I., Puerto Rico, Québec, Rhode I., Romania, Saskatchewan, Sicilia, South Carolina, Spain, Swaziland, Sweden, Switzerland, Tadzhikistan, Taiwan, Tennessee, Transcaucasus, Turkey, Ukraine, Vermont, Vietnam, Virginia, Washington, West Virginia, Windward Is., Wisconsin, Yugoslavia, Zimbabwe.

Plants 8-62 cm. Leaf blades 20-60 × 15-45 mm. Peduncles 5-20 mm. Involucres hemispheric to campanulate, 3-6 mm diam. Phyllaries falling. Paleae: outer falling, broadly elliptic to obovate, 2-3 mm; inner falling, linear to lanceolate, 2-3 mm, entire or 2- or 3-lobed, lobes to 1/3 total lengths, blunt. Ray florets (4-)5(-8); corollas usually white, sometimes pink, laminae 0.9-2.5 × 0.9-2 mm. Disc florets 15-35. Cypselae: rays 1.5-2 mm; discs 1.3-1.8 mm; pappi: rays of 6-15 fimbriate scales 0.5-1 mm; discs 0, or of usually 14-20, rarely 1-5, white, lanceolate to oblanceolate, fimbriate, sometimes aristate, scales 0.2-1.7 mm. 2n = 32 (48, 64).
Flowering and fruiting summer-autumn. Disturbed soils, fields, orchards, gardens, lawns, roadsides; 0-2500 m.