Heterogaura Rothrock, Proc. Amer. Acad. Arts 6: 350, 354. 1864; Clarkia sect. Heterogaura (Rothrock) H. Lewis & P. H. Raven

Inflorescences open racemes or panicles, axis erect; buds erect. Flowers not protandrous; petals pink darkening to lavender, without markings, 3–5 mm; stamens 8, 4 fertile, 4 sterile and reduced, 3–5 mm; ovary not grooved; stigma not exserted beyond anthers. Fruit an indehiscent capsule, subterete, 2–3 mm, nutlike, 1 or 2 seeded; pedicel 0–2 mm.

Species 1: w United States.

SELECTED REFERENCE Sytsma, K. J. and L. D. Gottlieb. 1986b. Chloroplast DNA evidence for the origin of the genus Heterogaura from a species of Clarkia (Onagraceae). Proc. Natl. Acad. Sci. U.S.A. 83: 5554–5557.