[Wikipedia] Rarity, Limited Range, Habitat: Hulsea californica is a rare species of flowering plant in the family Asteraceae known by the common names San Diego alpinegold and San Diego sunflower. It is endemic to southern California, where it grows only in the Peninsular Ranges. The plant grows in open areas such as forest clearings and occurs in the chaparral, especially after wildfire. Most of its known populations are in San Diego County.[1] The main threat to this species are invasive plant species. (link added by Mary Ann Machi)