Blennosperma bakeri is a threatened wildflower whose range is highly restricted to a small set of vernal pools in central Sonoma County, including the Laguna de Santa Rosa and the Sonoma Valley. Jepson lists the natural occurrences as restricted to less than 100 metres, but a few of the constructed wetland vernal pools are at slightly higher elevations at around 130 meters.

This plant, also known by the common name Sonoma Sunshine, attains a height of five to fifteen centimeters. Leaves are linear, with lower leaves entire; upper leaves are one to three lobed. Inflorescences have an involucre of six to eight millimeters. Ligules of the yellow ray flowers are five to seven mm long, and stigmas display as dark red. The four to six angled fruits are three to four mm in characteristic size.