Synonyms
Washingtonia gracilis Parish
Washingtonia robusta var. gracilis (Parish) Parish ex Becc.
Brahea robusta Voss
Washingtonia filifera var. gracilis (Parish) L.D.Benson
Neowashingtonia robusta (H.Wendl.) A.Heller
Pritchardia robusta (H.Wendl.) Nabonnand
Neowashingtonia sonorae (S.Watson) Rose
Washingtonia filifera var. sonorae (S.Watson) M.E.Jones
Washingtonia filifera var. robusta (H.Wendl.) Parish
Washingtonia sonorae S.Watson