Corethrogyne is a monotypic genus of flowering plant in the family Asteraceae.

Corethrogyne filaginifolia is a robust perennial herb or subshrub producing a simple to multibranched stem approaching 1 metre (3.3 ft) in maximum length or height.

De Candolle explained the genus name as derived from Greek κόρηθρον, kórethron, 'broom', 'brush' and γυνή, gyné, 'woman', 'female',[5] referring to the appendages on the style branches.

[3] In 1833, William Jackson Hooker and George A. Walker Arnott had described Aster filaginifolius.

Corethrogyne filaginifolia is native to western North America from the southwestern corner of Oregon through California to Baja California, where it is a common member of many plant communities, including chaparral and woodlands, forests, scrub, grasslands, and the serpentine soils flora.