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| Scientific Name | Oenothera berlandieri ssp. berlandieri (Calylophus drummondianus ssp. berlandieri) |
USDA PLANTS Symbol | CABEB2 |
| Common Name | Square-bud Primrose, Berlandieri's Sundrops | ITIS Taxonomic Serial No. | 836106 |
| Family | Onagraceae (Evening Primrose) | Wildflower Center Ref. | Click Here |
| Description | Habitat: Sandy or rocky soils in open areas, plains, brushlands. Plant: Erect bushy perennial, branched from base; reddish-brown stems 4 to 16 inches tall. Leaves: Sessile to short-petiolate, linear to oblanceolate leaves less than 3/4 to 1-1/2 inches long with shallow teeth along edges. Inflorescence: Yellow flowers 1 to 2 inches across with yellow stamens and yellow stigma as long or longer than stamens; stigma and hypanthium never black; flowers opening near sunrise. Bloom Period: March to November. References: Calypholus drummondianus ssp. berlandieri in "Manual of the Vascular Plants of Texas" by Correll and Johnston and Calypholus berlandieri in "Wildflowers of Texas" by Geyata Ajilvsgi. |
BONAP Distribution Map |
Texas Status: Native |
| Scientific Name | Oenothera berlandieri ssp. pinifolia (Calypholus berlandieri ssp. pinifolius, Calypholus drummondianus ssp. drummondianus) |
USDA PLANTS Symbol | CABEP2 |
| Common Name | Square-bud Primrose, Berlandieri's Sundrops | ITIS Taxonomic Serial No. | 836105 |
| Family | Onagraceae (Evening Primrose) | Wildflower Center Ref. | Click Here |
| Description | Habitat: Sandy or rocky soils in open areas, plains, brushlands. Plant: Erect slightly bushy perennial, reddish-brown stems 6 to 24 inches tall. Leaves: Sessile to short-petiolate, linear to oblanceolate leaves less than 1/2 to 3 inches long with shallow teeth along edges. Inflorescence: Yellow flowers 1 to 2 inches across with yellow stamens and yellow stigma as long or longer than stamens; stigma and hypanthium usually black; flowers opening near sunrise. Bloom Period: March to July. References: Calypholus drummondianus ssp. drummondianus in "Manual of the Vascular Plants of Texas" by Correll and Johnston and Oenothera berlandieri ssp. pinifolia in "Wildflowers of Texas" by Michael Eason. |
BONAP Distribution Map |
Texas Status: Native |
| Scientific Name | Oenothera brachycarpa | USDA PLANTS Symbol | OEBR |
| Common Name | Short-fruit Evening Primrose | ITIS Taxonomic Serial No. | 27378 |
| Family | Onagraceae (Evening Primrose) | SEINet Reference |
Click Here |
| Description | Habitat: Dry rocky slopes, 4,000-7,000 ft. Plant: Erect, nearly stemless, short perennial, less than 12 inches tall. Leaves: Basal rosette, lanceolate or ovate-lanceolate-shaped with entire to sinuate-dentate margins, 1-1/4 to 6 inches long and 3/8 to 1-1/4 inches wide; with prominent central vein and petioles 3/8 to 2-3/8 inches long. Inflorescence: Large yellow flowers rising from axils of uppermost leaves, 4 inches wide; hypanthium (resembling a stem) 2 to 6 inches long; 4 yellow petals becoming orange-red in age. Bloom Period: March 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 N/A |
Texas Status: Native |
| Scientific Name | Oenothera grandis (Oenothera laciniata var. grandis) | USDA PLANTS Symbol | OEGR2 |
| Common Name | Showy Evening Primrose | ITIS Taxonomic Serial No. | 27403 |
| Family | Onagraceae (Evening Primrose) | Kansas Wildflowers & Grasses Ref. | Click Here |
| Description | Habitat: Usually sandy soils in fields, prairies, pastures and waste areas. Plant: Erect simple or decumbent much-branched annual 8 to 30 inches tall; simple or branched from base with stems up to 24 inches long; somewhat hairy foliage. Leaves: Basal leaves with long petioles, oblanceolate and 4 to 12 inches long and up to 5/8 inch wide, irregularly-toothed margins; stem leaves alternate, on short petioles, elliptic to oblanceolate, about 1/2 to 2-3/8 inches long, pinnately-cleft into rounded lobes, or sometimes wavy-edged or toothed. Inflorescence: Arising from the upper leaf axils, solitary, showy flowers up to 3 inches across, with 4 yellow petals; 8 yellow stamens and prominent yellow stigma; 4 sepals reflexed to one side beneath; floral tube 1 to 2 inches long; flower opens in the evening. Bloom Period: March to June. References: "Manual of the Vascular Plants of Texas" by Correll and Johnston and Kansas Wildflowers and Grasses. |
BONAP Distribution Map |
Texas Status: Native |
| Scientific Name | Oenothera hartwegii (Calylophus hartwegii) | USDA PLANTS Symbol | CAHA14 |
| Common Name | Hartweg's Sundrops | ITIS Taxonomic Serial No. | 517700 |
| Family | Onagraceae (Evening Primrose) | SEINet Reference |
Click Here |
| Description | Habitat: Sandy and limestone soils in various ecologies including deserts, plains, foothills and canyons. Plant: Bushy perennial herb from a woody caudex; stems woody near the base, ascending to almost erect, somewhat branched; 4 to 16 inches tall. Leaves: Alternate, sessile stem leaves with linear to oblong-lanceolate, 3/8 to 2 inches long and 3/16 to 3/8-inch wide; edges entire to denticulate; leaf surfaces smooth, hairy, or glandular-hairy. Inflorescence: Arising from the upper leaf axils, solitary, showy flowers 3/4 to 2+ inches across, with 4 yellow petals becoming reddish; 8 yellow stamens and prominent yellow stigma; 4 sepals reflexed beneath; floral tube 5/8 to 2-1/8 inches long; flower opens in the afternoon or near sunset. Bloom Period: March to October. References: "Manual of the Vascular Plants of Texas" by Correll and Johnston and SEINet. |
BONAP Distribution Map |
Texas Status: Native |
| Scientific Name | Oenothera laciniata | USDA PLANTS Symbol | OELA |
| Common Name | Cut-leaf Evening Primrose | ITIS Taxonomic Serial No. | 27371 |
| Family | Onagraceae (Evening Primrose) | SEINet Reference |
Click Here |
| Description | Habitat: Dry, usually sandy soils in fields, roadsides and waste areas. Plant: Reclining to ascending annual 2 to 10 inches tall; simple or branched from base with stems up to 24 inches long; somewhat hairy foliage. Leaves: Alternate stem leaves, elliptic to oblanceolate, pinnately-cleft into rounded lobes, or sometimes merely wavy-edged or toothed, 1 to 2 inches long and about 1/2 inch wide. Inflorescence: Arising from the upper leaf axils, solitary, small (relative to genus standards) flowers, 1/4 to 1-inch across, with 4 heart-shaped yellow petals, maturing pink or red; 8 yellow stamens and prominent yellow stigma; 4 reflexed sepals beneath; floral tube 5/8 to 1-1/4 inches long; flower opens in the evening. Bloom Period: March to October. References: "Wildflowers of the Texas Hill Country" by Marshall Enquist, www.wildflower.org and SEINet. |
BONAP Distribution Map |
Texas Status: Native |
| Scientific Name | Oenothera macrocarpa (Oenothera missouriensis) | USDA PLANTS Symbol | OEMA |
| Common Name | Big-fruit Evening Primrose | ITIS Taxonomic Serial No. | 504004 |
| Family | Onagraceae (Evening Primrose) | SEINet Reference |
Click Here |
| Description | Habitat: Dry caliche soils in limestone outcrops, hillsides and prairies. Plant: Erect perennial, several stems or sometimes no apparent stems, 4 to 18 inches tall. Leaves: Narrowly lanceolate or elliptic to broadly lanceolate basal leaves, 2 to 4 inches long with smooth or slightly fine-toothed edges; petioles 3/8 to 2 inches long. Inflorescence: Opening near sunset, showy large yellow blossoms 3-1/2 inches across, 4 petals; sepals 3/4 to 1-1/4 inches long, floral tube 2 to 4 inches long. Bloom Period: May to August. References: O. missouriensis in "Wildflowers of the Texas Hill Country" by Marshall Enquist and "Manual of the Vascular Plants of Texas" by Correll and Johnston; and SEINet. |
BONAP Distribution Map |
Texas Status: Native |
| Scientific Name | Oenothera rhombipetala | USDA PLANTS Symbol | OERH |
| Common Name | Fourpoint 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 |
Texas Status: Native |
| 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 |
Click Here |
| 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 SEINet. |
BONAP Distribution Map |
Texas Status: Native |
| Scientific Name | Oenothera triloba | USDA PLANTS Symbol | OETR2 |
| Common Name | Stemless Evening Primrose | ITIS Taxonomic Serial No. | 27420 |
| Family | Onagraceae (Evening Primrose) | SEINet Reference |
Click Here |
| Description | Habitat: Relatively moist clay or calcareous soils in grassy slopes, open areas, and floodplains. Plant: Short, erect winter annual or biennial with short or no stem (just a long floral tube); less than 8 inches tall. Leaves: Basal rosette of elliptic to oblanceolate overall, all or lower portion irregularly pinnatifid; 1-1/4 to 12 inches long and 3/8 to 1-5/8 inches wide on petioles 3/8 to 2+ inches long. Inflorescence: Large yellow blossoms up to 3 inches across, 4 petals with crinkled edges; floral tube 2 to 4 inches long; 8 conspicuous stamens; opening near sunset and closing well before noon. Bloom Period: February to July. References: "Wildflowers of Texas" by Geyata Ajilvsgi, "Manual of the Vascular Plants of Texas" by Correll and Johnston and SEINet. |
BONAP Distribution Map |
Texas Status: Native |
| Scientific Name | Oenothera tubicula (Calypholus tubicula) | USDA PLANTS Symbol | CATU6 |
| Common Name | Texas Sundrops | ITIS Taxonomic Serial No. | 836081 |
| Family | Onagraceae (Evening Primrose) | SEINet Reference |
Click Here |
| Description | Habitat: Desert environment, gravelly, calcareous soils in dry washes and flats. Plant: Erect perennial, single or multiple stems, slightly hairy, do not appear to be woody, 4 to 12 inches tall; branched in upper part. Leaves: Narrowly lanceolate to lanceolate, alternate, somewhat hairy, nearly sessile, 1 to 2 inches long with smooth edges. Inflorescence: Yellow tubular blossoms opening 1 to 2 hours before sunrise, each about 1 inch across, 4 rounded petals; stigma is shield-shaped, protruding beyond 8 stamens. Bloom Period: March to September. References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, Cal Photos and SEINet. |
BONAP Distribution Map |
Texas Status: Native |
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