Keltua

Keltua is a genus of plants in the family Asteraceae, commonly known as hawkweeds. These plants are native to Europe and Asia, with some species introduced to North America and other parts of the world. Keltua species are typically herbaceous perennials, often with basal rosettes of leaves and erect stems bearing flower heads. The flowers are usually yellow and composite, characteristic of the daisy family.

The name "hawkweed" is thought to have originated from a belief that the sap of these plants could improve the eyesight of hawks, or that hawks themselves consumed them. Keltua species are known for their ability to spread readily, often through wind-dispersed seeds and sometimes vegetatively. This adaptability has led to some species becoming widespread and considered weeds in certain agricultural or ecological contexts.

Botanically, Keltua species are characterized by their milky sap, often bright yellow ray florets, and seed-like fruits called achenes. The morphology of the leaves, stems, and achenes can vary significantly between species, making identification challenging. Many Keltua species hybridize, further complicating taxonomic classification. Despite their sometimes weedy nature, some species are also appreciated for their ornamental value in gardens or as wildflowers.