Cutleaf evening-primrose
Oenothera laciniata Hill
Images
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Morphology
- Stem
- Erect, simple or usually much branched at base and above, nearly glabrous to densely stiff-hairy.
- Leaves
- Variable; basal leaves oblanceolate, often in rosette, .5 to 3.5 inches long, .5 to 1 inch wide; stem leaves alternate, short-stalked, linear-oblanceolate to narrowly elliptic, 1 to 4.75 inch long, .2 to 1.2 inch wide; nearly glabrous to fine hairy, sometimes long hairy; margins deeply lobed or wavy-toothed, sometimes nearly entire.
- Inflorescence
- Solitary flowers in upper leaf axils; buds erect or nodding.
- Flower
- Floral tube .6 to 1.6 inch long, sparsely pubescent; sepals 4, green to yellowish green, 1/5 to 1/2 inch long, bent backward; petals 4, yellow, fade pinkish, obovate, 1/5 to 3/4 inch long, apex notched; stamens 8, unequal, nearly as long as petals; style as long or longer than surrounding stamens.
- Fruit
- Capsule, cylindrical, usually spreading, .5 to 1.5 inch long, fine hairy and with sparse long hairs; seeds narrowly egg-shaped, brown.
Ecology
- Habitat
- Waste places, pastures, fields, open woods, stream valleys, and roadsides.
- Distribution
- Throughout Kansas.
Additional Notes
Comments
Cutleaf evening-primrose is a common weedy species. The flowers open near sunset and remain open through mid-morning.
Quick Facts
- Plant Type
- Wildflower
- Family
- Onagraceae - Evening Primrose Family
- Life Span
- Annual
- Height
- 2-24 inches
- Last Updated
- 2007-10-29
Color Groups
Yellow Wildflowers
Flowering Period
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Blooms: June, July, August, September