Texas
Wildbuds

Oenothera rhombipetala

(Four-point Evening Primrose)

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Oenothera rhombipetala, Along US83 near Paducah, Cottle Co. 0075

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Oenothera rhombipetala, Along US83 near Paducah, Cottle Co. 0090

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Oenothera rhombipetala, Along US83 near Paducah, Cottle Co. 0066

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Oenothera rhombipetala, Along US83 near Paducah, Cottle Co. 0076

Scientific Name Oenothera rhombipetala USDA PLANTS Symbol OERH
Common Name Four-point Evening Primrose ITIS Taxonomic Serial No. 565330
Family Onagraceae (Evening Primrose) Kansas Wildflowers and Grasses Ref. Click Here
Description Habitat: Sandy soils, along roadsides and disturbed areas.
Plant: Erect biennial or winter annual 1 to 3 feet tall, usually a single stem, but sometimes with multiple branches.
Leaves: Narrowly oblanceolate to narrowly ovate leaves, 2 to 3 inches long, less than 5/8-inch wide congested along stem and branches; entire to sinuate-dentate margins.
Inflorescence: Numerous buds crowded at branch tips; flowers below opening near sunset, yellow blossoms 1 to 1-1/2 inches across, 4 pointed petals; floral tube 1 to 1-1/4 inches long.
Bloom Period: May and June.
References: "Wildflowers of the Texas Hill Country" by Marshall Enquist and "Manual of the Vascular Plants of Texas" by Correll and Johnston.
BONAP Distribution Map

Map Color Key
Texas Status:
Native

Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County

© Tom Lebsack 2024