Euphorbia lathyris, a dicot, is an annual or perennial herb that is not native to California; it has been naturalized in the wild.
There is a high risk of this plant becoming invasive in California according to
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals,
Consortium of California Herbaria.[web application]. 2020. Berkeley, California:The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: Sep 28, 2020).