[Wikipedia] Range, Habitat: Polycarpon depressum is a species of flowering plant in the family Caryophyllaceae known by the common name California manyseed. It is native to southern California and Baja California, where it grows in sandy habitat such as coastal bluffs and disturbed habitat types such as fields and roadsides. (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: 04/02/2025).