[Wikipedia] Europe and Asia Native, Cultivation, Culinary Use: It is native to southern Europe and western Asia, and naturalized elsewhere[5] It has been cultivated as a leaf vegetable in England since the 17th century. As it requires less water than watercress, it is easier to cultivate. (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]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 03/28/2025).
