Birch Family - Photo (c) bev wigney, all rights reserved, uploaded by bev wigney Comprehensive check list for Birch Family (Family Betulaceae)
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: 50 06, 2012). (Link)