[Wikipedia] Taxonomy: It has a few common names including 'creeping wart cress', 'warty swine-cress', which is derived from the distinctive fruits, 'crowfoot' (it's leaf shape), 'greater swine cress' and 'swine cress'. The name 'swine cress' comes from its use as a poor quality salad alternative and thought only suitable for eating by pigs. (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2024. Berkeley, California:The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 12/04/2024).