Origin: Native
Notes: Taxonomy follows APG III (http://www.mobot.org/mobot/research/apweb/welcome.html).
References:
» The Angiosperm Phylogeny Group. 2003. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Bot. J. Linn. Soc. 141: 399–436.
» Weber, W.A. 1953. Balsamorhiza terebinthacea and other hybrid balsam-roots. Madroño 12: 47-49.