Senecio is a genus of the daisy family (Asteraceae) that includes ragworts and groundsels. The flower heads are normally rayed, completely yellow, and the heads are borne in branched clusters. Senecio is one of the largest genera of flowering plants, and despite the separation of many species into other genera it still contains over 1000 species of varied form, including leaf, stem and tuber succulents, annuals, perennials, aquatics, climbers, shrubs and small trees. Some species produce natural biocides (especially alkaloids) to deter or even kill animals that would eat them.

Senecio linifolius is a South African endemic species from the Eastern Cape Province where it is quite wide-spread. It is synonymously known as Cineraria filifolius, Senecio longifolius and Senecio odontophyllus. Senecio linifolius grows into a shrub of 1.5 meters tall. It has long narrow semi-succulent leaves which are dark green above and grey below. During spring it bears small yellow flowers.