Asclepias
Genus of flowering plants / From Wikipedia, the free encyclopedia
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Asclepias is a genus of herbaceous, perennial, flowering plants known as milkweeds, named for their latex, a milky substance containing cardiac glycosides termed cardenolides, exuded where cells are damaged.[4][5][6] Most species are toxic to humans and many other species, primarily due to the presence of cardenolides. However, as with many such plants, some species feed upon them (e.g. their leaves) or from them (e.g. their nectar). The most notable of them is the monarch butterfly, which uses and requires certain milkweeds as host plants for their larvae.
Asclepias | |
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Asclepias incarnata (swamp milkweed) flowers and a monarch butterfly | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Gentianales |
Family: | Apocynaceae |
Subfamily: | Asclepiadoideae |
Tribe: | Asclepiadeae |
Subtribe: | Asclepiadinae |
Genus: | Asclepias L.[1] |
Type species | |
Asclepias syriaca L. | |
Species[2] | |
Synonyms[3] | |
List
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The genus contains over 200 species distributed broadly across Africa, North America, and South America.[7] It previously belonged to the family Asclepiadaceae, which is now classified as the subfamily Asclepiadoideae of the dogbane family, Apocynaceae.
The genus was formally described by Carl Linnaeus in 1753,[8] who named it after Asclepius, the Greek god of healing.[9]