''Calylophus'' is a genus of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s in the family Onagraceae. Species include: *''

Calylophus berlandieri ''Oenothera berlandieri'', commonly called Berlandier's sundrops, is a species of flowering plant in the evening primrose family (Onagraceae). It is native to North America, where it is found primarily in the south central region of the United S ...

'' Spach (Berlandier's sundrops) *'' Calylophus hartwegii'' (Benth.) Raven (Hartweg's sundrops) *''

Calylophus lavandulifolius ''Calylophus lavandulifolius'' (lavender leaf sundrops, formerly ''Oenothera lavandulifolia'') is a low-growing perennial plant in the evening primrose family found in the Colorado Plateau and Canyonlands region of the southwestern United States ...

'' (Torr. & Gray) Raven (lavenderleaf eveningprimrose) *''

Calylophus serrulatus ''Calylophus serrulatus'' is a species of flowering plant in the Onagraceae known by the common name yellow sundrops. Other common names include halfshrub sundrop,

'' (Nutt.) Raven (halfshrub sundrop) *''

Calylophus toumeyi ''Calylophus'' is a genus of flowering plants in the family Onagraceae. Species include: *''Calylophus berlandieri'' Spach (Berlandier's sundrops) *''Oenothera hartwegii, Calylophus hartwegii'' (Benth.) Raven (Hartweg's sundrops) *'' ...

'' (Small) Towner (Toumey's sundrops) *''

Calylophus tubicula ''Calylophus'' is a genus of flowering plants in the family Onagraceae. Species include: *'' Calylophus berlandieri'' Spach (Berlandier's sundrops) *'' Calylophus hartwegii'' (Benth.) Raven (Hartweg's sundrops) *'' Calylophus lavandu ...

'' (Gray) Raven (Texas sundrops)

References

ITIS standard report page: ''Calyophus''
Onagraceae Onagraceae genera {{Myrtales-stub