Calylophus
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 lavandulifolius (Torr. & Gray) Raven (lavenderleaf eveningprimrose) Calylophus serrulatus (Nutt.) Raven (halfshrub sundrop) Calylophus toumeyi (Small) Towner (Toumey's sundrops) Calylophus tubicula (Gray) Raven (Texas sundrops) References ITIS standard report page: Calyophus Onagraceae Onagraceae genera