Argyreia

Argyreia is a genus of flowering plants in the family Convolvulaceae, the morning-glory family. It comprises several species of twining climbers native to tropical and subtropical Asia. Members are typically herbaceous or woody climbers with slender stems that coil around supports. Leaves are simple and often broad and heart-shaped, with entire margins. Flowers are funnel-shaped or trumpet-like, usually produced in showy clusters; colors range from purple or pink to white in different species. The fruit is a dry capsule containing numerous seeds.

A well-known member is Argyreia nervosa, commonly called Hawaiian baby woodrose. Its seeds contain psychoactive compounds such as ergine, and they have been used in traditional contexts as well as exploited for illicit drug use; cultivation and possession are regulated in several jurisdictions. Other species are valued for ornamental use in gardens and as climbers on trellises or fences. Some Argyreia species have documented traditional medicinal uses in various cultures, though information and safety vary by species.

Geographically, the genus is centered in Asia, with species adapted to forest margins, hillsides, and disturbed habitats. Some species are cultivated, while others are primarily wild or rare. Taxonomic treatment within Convolvulaceae has varied, and as with many large genera, new revisions can change species boundaries and classifications. Conservation concerns for Argyreia species tend to reflect habitat loss and collection pressures in local regions.

Overall, Argyreia represents a diverse group of climbing flowering plants notable for their ornamental appeal and, in the case of Argyreia nervosa, their culturally and historically significant seeds.