Caltrops - Photo (c) Anthony Knight, all rights reserved, uploaded by Anthony Knight Comprehensive check list for Caltrops (Family Zygophyllaceae)
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: 00 07, 2012). (Link)