Evening Primrose; Night Willow-herb oenothera biennis Flowers-Yellow, fragrant, opening at evening, 1 to 2 in.
"Wild Flowers Worth Knowing"
Neltje Blanchan et al
3. The words phoebe and oenothera use oe ligature in the original.
"A Year in the Fields"
John Burroughs
oenothera gigas, for example, has stouter stems and denser foliage; the leaves are larger and broader; its thick flower-buds produce gigantic flowers, but only small fruits with large seeds.
"Darwin and Modern Science"
A.C. Seward and Others