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Common names include horseweed, Canadian horseweed, Canadian fleabane, coltstail, marestail, and butterweed. It was the first weed to have developed glyphosate resistance, reported in 2001 from Delaware .
Erigeron sumatrensis (syn. Conyza sumatrensis) is an annual herb probably native to South America, but widely naturalised in tropical and subtropical regions, and regarded as an invasive weed in many places. [1] [2] [3] In the British Isles it is known as Guernsey fleabane. [4]
Erigeron bonariensis is a species in the family Asteraceae, found throughout the tropics and subtropics as a pioneer plant; its precise origin is unknown, but most likely it stems from Central America or South America.
Erigeron philadelphicus, the Philadelphia fleabane, is a species of flowering plant in the composite family ().Other common names include common fleabane, daisy fleabane, frost-root, marsh fleabane, poor robin's plantain, skevish or skervish, [3] and, in the British Isles, robin's-plantain, but all of these names are shared with other species of fleabanes (). [4]
Conyza (horseweed, butterweed or fleabane) is a genus of flowering plants in the family Asteraceae. [4] [5] [6] [7]They are native to tropical and warm temperate regions throughout the world, and also north into cool temperate regions in North America and eastern Asia.
Erigeron annuus (formerly Aster annuus), the annual fleabane, daisy fleabane, [3] or eastern daisy fleabane, [4] is a species of herbaceous flowering plant, ...
Erigeron (/ ɪ ˈ r ɪ dʒ ə r ɒ n /) [4] is a large genus of plants in the composite family (). [5] It is placed in the tribe Astereae and is closely related to the Old World asters and the true daisies ().
Erigeron strigosus is a species of flowering plant in the family Asteraceae known by the common names prairie fleabane, [1] common eastern fleabane, [2] and daisy fleabane. [ 3 ] Erigeron strigosus is native to eastern and central North America as far west as Manitoba , Idaho and Texas .