Cernua

Cernua is a genus of herbaceous plants in the family Lamiaceae, commonly known as the mint family. Species within this genus are characterized by their creeping or trailing habit and their aromatic foliage. The leaves are typically opposite and ovate, often with serrated margins. The flowers are small, borne in whorls or spikes, and are usually white, pink, or purple.

The genus Cernua is native to Europe and Asia, where its species are found in a variety of habitats, including woodlands, meadows, and damp areas. Some species are naturalized in other parts of the world. The scent of Cernua species is often reminiscent of mint, and some have been used in traditional medicine and for culinary purposes, though this is less common than with other members of the Lamiaceae family.

Reproduction in Cernua species is primarily through vegetative means, such as runners, as well as through seeds. The plants are generally hardy and can tolerate a range of soil conditions. Due to their ground-covering nature, some Cernua species are used in landscaping as ornamental groundcovers. Identification of individual species can be challenging and often relies on detailed examination of floral and vegetative characteristics. The taxonomic status of Cernua has been subject to revision, with some species sometimes being placed in other related genera.