Dudleya brittonii is what I would call a California Native, but not everyone would agree with me. It is a Baja Native, i.e. Mexico, or Baja California. Is that California or not? Only the geologic formations can know for sure. But I’m betting that Eons of development would indicate that Baja and the US part of coastal California are part of the same Biome.
That’s my argument for including this plant in a list of California natives.
The other argument would be that some of these are growing naturally all the way up as far as San Diego County anyway so what’s this scientifically insignificant argument really about?!?