Oenothera albicaulis
(Whitest Evening Primrose)
Oenothera albicaulis, Canyon Rim Trail, Caprock Canyons State Park 7533
Oenothera albicaulis, Canyon Rim Trail, Caprock Canyons State Park 7545
Oenothera albicaulis, Canyon Rim Trail, Caprock Canyons State Park 7542
Oenothera albicaulis, Canyon Rim Trail, Caprock Canyons State Park 7538
| Scientific Name | Oenothera albicaulis | USDA PLANTS Symbol | OEAL |
| Common Name | Whitest Evening Primrose, Prairie Evening Primrose | ITIS Taxonomic Serial No. | 27373 |
| Family | Onagraceae (Evening Primrose) | SEINet Reference |
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| Description | Habitat: Dry, sandy soils in open flats and slopes. Plant: Annual usually branching from base, with erect central stem 2 to 12 inches tall and spreading, decumbent lateral stems up to 20 inches long. Leaves: Basal rosette leaves often fall off prior to flowering, spatulate, oblanceolate, or ovate, 2 to 4 inches long and up to 1 inch wide, with a smooth or toothed margin; stem leaves alternate, lanceolate to oblanceolate in outline, usually pinnatifid into narrow lobes, and smaller than basal leaves. Inflorescence: Solitary white, showy flowers up to 3-1/4 inches wide opening near sunset, mature blossoms nodding; pedicels up to 1-5/8 inches long arising from leaf axils; floral tube 3/8 to 1-5/8 inches long; 4 sepals per flower, 3/8 to 1-1/4 inches long; 4 white petals fading to pink. Bloom Period: April to June. References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Michael Eason and SEINet. |
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