Yellow Desert Evening Primrose
Common name: Yellow Desert Evening Primrose
Latin name: Oenothera primiveris
Description: This is a hairy annual herb producing a dense rosette of leaves in which the inflorescence occurs; there is generally no true stem. The showy flowers arise from the axils of the leaves. Each flower has yellow heart-shaped petals up to 4 centimeters in length which fade orange or red with age. The fruit is a straight or curving capsule up to 6 centimeters in length.
Leaf: The green or grayish leaves are up to 28 cm long and have wavy or crinkled edges, or are cut into deep lobes or teeth.
Habitat: Sandy flats, low hills, dune margins, arroyos
Elevation: 30–1400 m.
Flowering time: Mar-May
Notes: This photo was taken on April 6, 2004 near Cuddeback Lake, Kern County, California. Oenothera primiveris is a dicot that is native to California and is found only slightly beyond California borders. Distribution outside California: ± sw US, n Mexico.
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