Children (12 direct children, 12 direct and indirect children):
Oenothera deltoides subsp. howellii
Antioch dunes evening primrose
Oenothera deltoides ambigua
Birdcage evening primrose
Oenothera deltoides cognata
Birdcage evening primrose
Oenothera deltoides deltoides
Birdcage evening primrose
Oenothera deltoides piperi
Piper's evening primrose
Oenothera deltoides var. arizonica
Oenothera deltoides subsp. eurekensis
Oenothera deltoides var. ambigua
Oenothera deltoides var. howellii
Oenothera deltoides var. piperi
Oenothera deltoides var. decumbens
Oenothera deltoides var. cineracea