Onosma

Onosma is a genus of flowering plants in the borage family, Boraginaceae. The genus is native to Europe, Asia, and North Africa. Onosma species are typically herbaceous perennials or subshrubs, often with hairy leaves and stems. Their flowers are usually tubular and often yellow, orange, or white.

The genus Onosma contains a number of species that have been used in traditional medicine. For example, Onosma dichroanthum has been used as an expectorant and a diuretic. Other species have been used to treat skin conditions and wounds. The plants are also sometimes cultivated for their ornamental value, particularly their colorful flowers.

The exact number of species within the genus Onosma can vary depending on taxonomic classification, but it is generally considered to be a moderately sized genus. They are often found in dry, rocky habitats. Pollination is typically carried out by insects. The fruits are usually small nutlets. Further research is ongoing into the medicinal properties and ecological roles of various Onosma species.