Fourpoint Evening Primrose, Diamond Petal Primrose
Oenothera rhombipetala Nutt. ex. Torr. & A. Gray
Onagraceae (Evening Primrose Family)
▲▼ mature plants
▲▼ flowers
▲▼ flowers
Fourpoint Evening Primrose: (pp. 378-379 in Weeds of the Great Plains; not in Weeds of the Northeast)
§ more common on sandy soils
§ has more branches from base, and more flowers usually are blooming at one time (showy) than common or biennial evening primrose
§ flower petals are diamond-shaped, and have a rounded point at the tip, compared to the blunt or notched petal tips of common evening primrose
§ stem leaves are narrower and much shorter and more dense on fourpoint evening primrose
