Oenothera serrulata
(Yellow Sundrops)
Oenothera serrulata, Caprock Canyons State Park, Briscoe Co. 9739
Oenothera serrulata, Caprock Canyons State Park, Briscoe Co. 9732
Oenothera serrulata, Caprock Canyons State Park, Briscoe Co. 9535
Oenothera serrulata, Caprock Canyons State Park, Briscoe Co. 9733
Oenothera serrulata, Caprock Canyons State Park, Briscoe Co. 9552
Oenothera serrulata, Caprock Canyons State Park, Briscoe Co. 9749
| Scientific Name | Oenothera serrulata (Calypholus serrulatus) | USDA PLANTS Symbol | CASE12 |
| Common Name | Yellow Sundrops | ITIS Taxonomic Serial No. | 517736 |
| Family | Onagraceae (Evening Primrose) | SEINet Reference |
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| Description | Habitat: Rocky, sandy soils in open areas, prairies, roadsides. Plant: Erect bushy perennial with multiple stems from a woody base, may be rough-looking with remnants of previous year's dried stems and branches; up to 2 feet tall. Leaves: Alternate, linear to narrowly oblong or oblanceolate, sessile, 0.8 to 2.4 inches long with serrulate or (rarely) smooth edges. Inflorescence: Yellow funnel-shaped blossoms arising from upper leaf axils opening in the morning; 4 rounded petals spreading from 0.5 to nearly 1 inch across; stigma is slightly 4-lobed; 8 stamens. Bloom Period: April to July. 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