Evening Primrose Family - Photo (c) Steve Ganley, some rights reserved (CC BY-NC), uploaded by Steve Ganley Comprehensive check list for Evening Primrose Family (Family Onagraceae)
Source: Calflora: Information on California plants for education, research and conservation. [web application]. 2012. Berkeley, California: The Calflora Database [a non-profit organization]. Available: http://www.calflora.org/ (Accessed: 27 07, 2012). (Link)