Oenothera species

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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
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.
Texas Status
Native
Scientific Name Oenothera boquillensis (Gaura boquillensis) USDA PLANTS Symbol
OEBO
Common Name Rio Grande Beeblossom, Boquillas Lizardtail ITIS Taxonomic Serial No.
836005
Family Onagraceae (Evening Primrose) SEINet Reference
Description Habitat: Sandy areas along canyon walls and slopes, and in gravelly arroyos; near the Rio Grande.
Plant: Erect, clumped, multi-stemmed perennial, 10 to 40 inches tall.
Leaves: Basal narrowly oblanceolate, upper narrowly elliptic to lanceolate or linear; 1/4 to 2-1/2 inches long and wavy, toothed edges.
Inflorescence: Flowers in a congested, unbranched spike, 4 white-to-light pink (often fading to purplish) petals around the top half of the blossom, and 8 long stamens with pink anthers and long central stigma; green sepals below.
Bloom Period: March to August.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Rare Plants of Texas" by Poole, Carr, Price and Singhurst and Smithsonian Museum of Natural History.
Texas Status
Native
Scientific Name Oenothera kunthiana USDA PLANTS Symbol
OEKU
Common Name Kunth's Evening Primrose ITIS Taxonomic Serial No.
27425
Family Onagraceae (Evening Primrose)
SEINet Reference
Description Habitat: Gravel bars, sandy flats, washes, drainages, roadsides open grassy and brushy areas
Plant: Erect annual branching from base, nearly smooth stems up to 16 inches tall.
Leaves: Alternate stem leaves, lanceolate to oblanceolate in outline, margins pinnatifid, sinuate or entire, up to 3-3/4 inches long and 1 inch wide on petioles up to 3/4-inch long.
Inflorescence: Solitary white flowers about 1-1/2 inches across inches wide opening near sunset; floral tube 3/8 to 3/4- inch long; sepals 1/4 to 3/4 inches long; 4 white petals fading to pink.
Bloom Period: February to May.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Michael Eason and www.americansouthwest.net.
Texas Status
Native
Scientific Name Oenothera lindheimeri (Gaura lindheimeri) USDA PLANTS Symbol
OELI2
Common Name Lindheimer's Beeblossom, White Gaura ITIS Taxonomic Serial No.
835999
Family Onagraceae (Evening Primrose) SEINet Reference
Description Habitat: Black clay or sandy soils in prairies, forest edges and moist ares around ponds and seeps; widely cultivated.
Plant: Erect to spreading perennial 20-60 inches tall, upper portion much branched; colony-forming.
Leaves: Narrow, elliptic, hairy leaves 1/2 to 3-1/2 inches long, serrate margins.
Inflorescence: White-to-light pink flowers 1/2 to 1-14 inches long in a spike, 4 petals about 1/2-inch long around the top half of the blossom, and 8 long, fine stamens with yellow anthers and long central stigma; pink sepals below.
Bloom Period: April to November.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston and "Wildflowers of Texas" by Geyata Ajilvsgi.
Texas Status
Native
Scientific Name Oenothera patriciae (Gaura brachycarpa) USDA PLANTS Symbol
OEPA2
Common Name Plains Beeblossom ITIS Taxonomic Serial No.
835996
Family Onagraceae (Evening Primrose) Wildflower Center Ref.
Description Habitat: Sandy, open areas.
Plant: Erect, weak, delicate single-stemmed annual, may reach 26 inches tall, generally much shorter; hairy stems.
Leaves: Lanceolate to oblanceolate, hairy leaves up to 2-3/4 inches long, slightly toothed.
Inflorescence: A few pink rose red or white flowers in a spike, buds and backs of sepals pubescent; 4 petals about 1/2-inch long around the top half of the blossom, and 8 long stamens with dark anthers and long central stigma; greenish to pinkish sepals below.
Bloom Period: February to June.
References: Gaura brachycarpa in"Manual of the Vascular Plants of Texas" by Correll and Johnston and Shinners & Mahler’s Illustrated Flora of North Central Texas.
Texas Status
Native
Scientific Name Oenothera suffulta (Gaura suffulta) USDA PLANTS Symbol
OESU4
Common Name Kisses, Wild Honeysuckle ITIS Taxonomic Serial No.
835989
Family Onagraceae (Evening Primrose)
SEINet Reference
Description Habitat: Sandy, open areas.
Plant: Erect, annual or biennial, mutiple stems, usually branched 1 to 3 ft. tall.
Leaves: Basal and alternate along the stems; blades oblanceolate (basal) to linear (upper stem leaves), 3/8 to 6 inches long and up to 1 inch wide, tapering at the base into a winged petiole; margins smooth to sinuate-dentate.
Inflorescence: Raceme of closely spaced flowers, several opening each day; buds and backs of sepals smooth; blossoms about 3/4-inch across with 4 white to pink petals, becoming darker with age, about 3/8 to 5/8-inch long around the top half of the blossom; 4 somewhat longer reflexed sepals; 8 stamens with white filaments and dark red anthers; long central greenish-yellow stigma.
Bloom Period: April to June.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, Shinners & Mahler’s Illustrated Flora of North Central Texas and SEINet.
Texas Status
Native

Click for yellow Oenothera and pink Oenothera.

© Tom Lebsack 2019