Oenothera Biennis, Common Evening Primrose



Common name:
Common evening primrose
Scientific name:
Oenothera biennis
Main flower color:
Range:
England and Wales; less common in Scotland. A naturalised species, from North America
Height:
Up to 150 cm
Habitat:
Sand dunes, waste ground
Flowers:
The four petals are yellow, heart-shaped, and about as wide as long (up to 3 cm), while the sepals are pale green (not red-striped), similar in length to the petals though much narrower, and recurved when mature, They and the long, slender hypanthium are sparsely covered by short hairs, lacking any red bases. The four yellow stamens and the greenish style are all equal in length
Fruit:
Straight, sparsely hairy pods, green maturing to brown
Leaves:
Elliptic to oblanceolate, up to 20 cm long, entire or faintly toothed
Season:
June to September
Rarity:
★★★★★