catweed
Ageratina adenophora (Spreng.) R.M.King & H.Rob.
Ageratina adenophora, known as catweed, is a flowering plant in the Asteraceae family. Native to Mexico, it has become invasive in many regions, including Açores, Madeira, Portugal, and various other countries. It was originally cultivated as an ornamental plant but now affects farmland and bushland. It is toxic to horses, causing a respiratory disease called Numinbah horse sickness.
Description
Ageratina adenophora (Spreng.) R.M.King & H.Rob. is a member of the Asteraceae family and is commonly referred to as catweed. It is native to Mexico and has spread to multiple regions, including Açores, Madeira, and islands in Portugal, as well as countries like Belgium, France, and Great Britain. This species was initially introduced as an ornamental plant but has since become invasive in agricultural and natural areas. It is known to be harmful to horses, leading to a respiratory condition known as Numinbah horse sickness when ingested.
Other common names
Sticky snakerootcroftonweedsticky-agrimonycatweedMaui pamakanihemp-agrimonyMexican-devilWhite ThoroughwortCrofton Weed
Distribution
Açores · Madeira · Portugal Continental · Faial Island · Pico Island · São Jorge Island · São Miguel Island · Terceira Island · Desertas · Madeira Island · Porto Santo island · TW · ZA · LK · BN · NP · Belgium · France · The Netherlands · Great Britain · DZ · IT · PT · BT · TH · GR · FM · JM · VN · NG
Synonyms
Eupatorium adenophorum var. adenophorumEupatorium adenophorumEupatorium adenophorum var. peruvianumEupatorium pasadenense
