Distribution
Albania (introduced), Austria (introduced), Belarus (introduced), Belgium (introduced), Benin (introduced), Botswana (introduced), Bulgaria (introduced), Cameroon (introduced), Cape Verde (introduced), Denmark (introduced), Djibouti (introduced), Ethiopia (introduced), Finland (introduced), France (introduced), Germany (introduced), Greece (introduced), Hungary (introduced), India (introduced), Iran (introduced), Ireland (introduced), Italy (introduced), Japan (introduced), Kazakhstan (introduced), Lesotho (introduced), Libya (introduced), Madagascar (introduced), Mauritius (introduced), Mozambique (introduced), Myanmar (introduced), Namibia (introduced), Nepal (introduced), Netherlands (introduced), Norway (introduced), Pakistan (introduced), Philippines (introduced), Poland (introduced), Portugal (introduced), Reunion (introduced), Romania (introduced), Spain (introduced), Sri Lanka (introduced), Sudan (introduced), Swaziland (introduced), Sweden (introduced), Switzerland (introduced), Taiwan (introduced), Tunisia (introduced), Turkey (introduced), Turkmenistan (introduced), Ukraine (introduced), Uzbekistan (introduced), Vietnam (introduced), Yemen (introduced), Zambia (introduced)

Native to: Argentina Northeast, Argentina Northwest, Argentina South, Bolivia, Brazil South, Brazil Southeast, Chile Central, Chile North, Chile South, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Haiti, Jamaica, Juan Fernández Is., Leeward Is., Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, New Mexico, Paraguay, Peru, Puerto Rico, Uruguay, Venezuela, Windward Is.
Introduced into: Albania, Altay, Amur, Arizona, Austria, Azores, Baltic States, Belarus, Belgium, Benin, Botswana, British Columbia, Bulgaria, California, Cameroon, Canary Is., Cape Provinces, Cape Verde, Chatham Is., Colorado, Connecticut, Corse, Czechoslovakia, Denmark, District of Columbia, Djibouti, East Aegean Is., East Himalaya, Eritrea, Ethiopia, Finland, France, Free State, Germany, Great Britain, Greece, Gulf of Guinea Is., Hawaii, Hungary, Illinois, India, Indiana, Iowa, Iran, Ireland, Italy, Japan, Jawa, Kansas, Kazakhstan, Kentucky, Khabarovsk, Kirgizstan, Korea, Krym, Kuril Is., KwaZulu-Natal, Laccadive Is., Lesotho, Libya, Madagascar, Madeira, Malaya, Manitoba, Maryland, Masachusettes, Mauritius, Michigan, Minnesota, Missouri, Mozambique, Myanmar, Namibia, Nebraska, Nepal, Netherlands, New Brunswick, New Guinea, New Jersey, New South Wales, New York, Norfolk Is., North Caucasus, North Dakota, Northern Provinces, Northwest European R, Norway, Ohio, Ontario, Oregon, Pakistan, Palestine, Pennsylvania, Philippines, Poland, Portugal, Primorye, Queensland, Québec, Rhode I., Romania, Réunion, Sardegna, Sicilia, South Australia, Spain, Sri Lanka, Sudan, Swaziland, Sweden, Switzerland, Tadzhikistan, Taiwan, Tasmania, Texas, Tibet, Transcaucasus, Tubuai Is., Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Ukraine, Uzbekistan, Vermont, Victoria, Vietnam, Virginia, West Himalaya, West Siberia, West Virginia, Western Australia, Wisconsin, Yemen, Yugoslavia, Zambia, Zimbabwe.

Plants 4-60 cm. Leaf blades 7-110 × 3-70(-80) mm. Peduncles 1-40 mm. Involucres campanulate, 2.5-5 mm diam. Phyllaries persistent. Paleae: outer persistent with distal phyllaries or falling, elliptic to obovate; inner usually persistent, lanceolate to ovate or obovate, 2-3.5 mm, 3-lobed, lobes to 1/3+ total lengths, acute. Ray florets (3-)5(-8); corollas usually dull white (pink), laminae 0.5-1.8 × 0.7-1.5 mm. Disc florets 15-50. Cypselae: rays 1.5-2.5 mm; discs 1.3-2.5 mm, glabrous or strigose; pappi: rays 0 or of 5-10, laciniate scales 0.5-1 mm; discs 0, or of 15-20 white or gray, linear, fimbriate, obtuse (acute) scales 0.5-2 mm.