Cooper's Caulanthus, Cooper's Jewel Flower, Cooper's Wild Cabbage: Caulanthus cooperi
Hall's Caulanthus, Hall's Wild Cabbage: Caulanthus hallii
San Diego Wild Cabbage, Slender-pod Jewelflower: Caulanthus heterophyllus (Synonyms: Caulanthus heterophyllus var. heterophyllus, Caulanthus heterophyllus var. pseudosimulans, Caulanthus stenocarpus, Guillenia heterophylla, Streptanthus heterophyllus)
Payson's Caulanthus, Payson's Jewelflower: Caulanthus simulans