It is known from about 20 occurrences on the coastline of San Luis Obispo County near Pismo Beach.
Clarkia | Lagerstroemia speciosa | Clarkia, Idaho | Tecomanthe speciosa | Sinningia speciosa | Clarkia borealis | Banksia speciosa | Attalea speciosa | Erythrina speciosa | Clarkia pulchella |