As classified in WFO snapshot
June 2025
latest classification for this taxon
subspecies
Lupinus arbustus subsp. calcaratus
(Kellogg) D.B.Dunn
This subspecies name was first published in Leafl. W. Bot. 7: 255 (1955)
This subspecies name has been reclassified since this snapshot. Its current preferred usage is a synonym .