About Oenothera kunthiana (Spach) Munz
Oenothera kunthiana, commonly known as Kunth's evening primrose, is a flowering plant species belonging to the family Onagraceae. It is native to southern Texas, Mexico, Central America, and Hispaniola, and has been introduced to Hawaii. It is an annual plant that grows to a height of 40 cm, or 16 inches.