Oenothera species

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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.
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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.
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.
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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.
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
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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.
Texas Status
Native
Scientific Name Oenothera grandis (Oenothera laciniata var. grandis) USDA PLANTS Symbol
OEMGR2
Common Name Showy Evening Primrose ITIS Taxonomic Serial No.
27403
Family Onagraceae (Evening Primrose) Kansas Wildflowers & Grasses Ref.
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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 edges; 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.
Texas Status
Native
Scientific Name Oenothera laciniata USDA PLANTS Symbol
OEMLA
Common Name Cut-leaf Evening Primrose ITIS Taxonomic Serial No.
27371
Family Onagraceae (Evening Primrose) SEINet Reference
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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 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.
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
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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, 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: "Wildflowers of the Texas Hill Country" by Marshall Enquist, "Manual of the Vascular Plants of Texas" by Correll and Johnston and SEINet.
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.
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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.
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
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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.
Texas Status
Native

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© Tom Lebsack 2019