What does asclepias mean?
Asclepias is the scientific name for a genus of flowering plants commonly called milkweeds. Native mainly to North America, these hardy perennials are known for their milky white sap, their rounded clusters of pink, orange, or white flowers, and their distinctive seed pods that split open to release seeds carried aloft by silky floss. Gardeners prize species such as butterfly weed (Asclepias tuberosa) and swamp milkweed (Asclepias incarnata) for their long bloom and drought tolerance, while conservationists value them above all because monarch butterflies lay their eggs exclusively on asclepias leaves, making the genus essential to the monarch's survival. Although botanists favor the formal name, most casual speakers simply say 'milkweed'. Derived from the Greek healer-god Asclepius, the name nods to the plant's long history in traditional medicine. Today, planting asclepias has become a popular, practical gesture of support for pollinators.
nounAsclepias is a genus of herbaceous flowering plants, commonly known as milkweeds, that bear clusters of small flowers followed by seed pods filled with silky-tufted seeds. When they rupture, they release a milky latex sap.
- A genus of North American herbaceous plants (the milkweeds) with milky sap, clustered flowers, and pods of silky seeds, valued by gardeners as host plants for monarch butterflies.
- An individual plant belonging to this genus.
"The monarch butterflies gathered on the roadside patch of asclepias, laying their eggs beneath its broad leaves."
"Butterfly weed (Asclepias tuberosa) lights up the border with brilliant orange flower heads each midsummer."
"She let a stand of asclepias grow wild at the edge of the meadow to give the monarch caterpillars somewhere to feed."
Like many scientific genus names, Asclepias is typically left unchanged in the plural, especially in botanical writing; informal anglicized plurals are rare.
"Several asclepias bloomed along the sunny edge of the prairie restoration."
The genus was named after Asclepius, the Greek god of medicine — because milkweed's milky sap has long been used in folk remedies.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of asclepias
The name Asclepias comes from Asclepius, the ancient Greek god of medicine and healing, reflecting the genus's traditional medicinal uses. Linnaeus adopted the classical name when formalizing the genus in his eighteenth-century plant classification. Related forms include 'asclepiad', which can refer both to a plant resembling the milkweed and to a type of verse associated with the lyric poet Asclepiades of Samos, whose name shares the same Greek root.
Related word forms
How asclepias is actually used
Asclepias is primarily a botanical term used by gardeners, ecologists, and naturalists; in everyday speech people more often say simply 'milkweed'. In botanical writing the genus name is conventionally capitalized and italicized. Because several species are native to North America and important to monarch butterflies, the word carries positive connotations of conservation and pollinator gardening.
Easily confused with asclepias
Asclepias is the milkweed genus named after the Greek healing god Asclepius, while Aesculus is an entirely different plant genus that includes buckeyes and horse chestnuts.