BERLANDIER'S EVENING PRIMROSE
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| File Size: 139 KB |
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Oenothera berlandieri (Spach ) Steud.
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| [=Calylophus berlandieri Spach] | | [=Calylophus drummondianus Spach subsp. berlanderi (Spach ) Towner & Raven] |
| Oklahoma panhandle (photo by Marion McGlohon) |
| Perennial |
| Height: 4-30 inches |
| Family: Onagraceae - Evening-primrose Family |
| Flowering Period: April, May, June, July, August |
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| Stems: | | Decumbent to erect, simple or branched, glabrous or finely strigose to canescent; epidermis green or brown, sometimes exfoliating. | | Leaves: | | Cauline, alternate, sessile; blade spatulate to narrowly lanceolate or linear, 1/2 to 3.5 inches long, 1/25 to 2/5 inch wide, margins nearly entire to serrate, surfaces glabrous or finely strigose to canescent. | | Inflorescences: | | Axillary, flowers solitary. | | Flowers: | | Radially symmetric; hypanthium 1/5 to 4/5 inch, glabrous or finely strigose to canescent; sepals 4, deciduous, absent on fruit, reflexed, triangular, 1/5 to 1/2 inch, with conspicuously keeled midrib; petals yellow, 4, nearly orbiculate, obovate, or obcordate, 2/5 to 1 inch, tip rounded to truncate or shallowly notched; stamens 8, of 2 lengths; anthers 1/7 to 1/5 inch; stigma positioned above anthers, somewhat 4-angled. | | Fruits: | | Capsules, ascending, cylindric, 2/5 to 1.6 inch long, 1/25 to 1/12 inch wide, straight or slightly curved, 4-angled, strigose; seeds many per fruit, brown, obliquely truncate and angled, 1/25 to 1/12 inch, obscurely roughened. | | Habitat: | | Rocky to sandy shortgrass prairies | | Distribution: | | Southwest corner of Kansas | | Origin: | | Native | | Comments: | | Named for French botanist Jean Louis Berlandier.
Oenothera has been expanded to include Calylophus, a genus formerly recognized as separate in the Great Plains. |
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| Berlandier's evening primrose |  | | 120 KB | | Oklahoma panhandle (photo by Marion McGlohon) |
| | Berlandier's evening primrose |  | | 157 KB | | Oklahoma panhandle (photo by Marion McGlohon) |
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