The corolla of this species consists of petals that are fused into a tube. When all of the petals of a flower are fused together the corolla is described as sympetalous or gamopetalous. This condition, which characterizes entire families of flowering plants, is considered to be a derived or advanced character state. A sympetalous corolla typically consists of three parts—the lobes, the throat, and the tube. The throat is the somewhat widened opening into the tube and the lobes make up the conspicuous flared apex. The size, shape, and coloration of the corolla and its parts, along with other characters, are useful in distinguishing different species of Linanthus.
DISTRIBUTION: Uncommon in open grassy flats generally in sandy soil from the North and Central Coast to the San Francisco Bay Area; < 1200 m.
