| Erigeron bonariensis | |
|---|---|
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Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Erigeron |
| Species: | E. bonariensis |
| Binomial name | |
| Erigeron bonariensis | |
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| Occurrence data fromGBIF | |
| Synonyms[1] | |
Synonymy
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Erigeron bonariensis is a species in the familyAsteraceae, found throughout the tropics and subtropics as apioneer plant; its precise origin is unknown, but most likely it stems fromCentral America orSouth America. It has become naturalized in many other regions, includingNorth America,Europe andAustralia.
Common names ofE. bonariensis includeflax-leaf fleabane,wavy-leaf fleabane,Argentine fleabane,hairy horseweed,asthma weed andhairy fleabane.[2]
Erigeron bonariensis grows up to 75 cm (29.5 in) in height and its leaves are covered with stiff hairs, including long hairs near the apex of thebracts. Itsflower heads have whiteray florets and yellowdisc florets. It can easily be confused withErigeron canadensis, which grows taller, andE. sumatrensis.[3]
It flowers in August and continues fruiting until the first frosts. It is instantly recognisable by its blue-green foliage, very narrow, undulate stem-leaves, and purple-tipped involucral bracts. It reproduces only by seed, which are easily blown and spread by wind.[citation needed]
Erigeron bonariensis is found throughout the tropics and subtropics as apioneer plant; its precise origin is unknown, but most likely it stems fromCentral America orSouth America. It has become naturalized in many other regions, includingNorth America,Europe andAustralia.[4][5][6][7]
E. bonariensis is a rare alien in southeasternEngland, found along walls and in cracks in pavements and concretedriveways.[citation needed] It is widespread throughout Australia, where it thrives on roadsides,fallows,pastures, gardens, lawns,footpaths, parks,riparian vegetation, forest andwetland perimeters,waste dumps and disturbed grounds.[8][9]
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