Berlandier's evening primrose

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Berlandier's evening primrose

Berlandier's evening primrose

Berlandier's evening primrose

Morphology

Stem

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.

Inflorescence

Axillary, flowers solitary.

Flower

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.

Fruit

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.

Ecology

Habitat

Rocky to sandy shortgrass prairies

Distribution

Southwest corner of Kansas

Additional Notes

Synonyms

Alternative scientific names that have been used for this plant.