It is sometimes treated as a variety of Atriplex parishii.

It is often treated as a variety of Lupinus westianus.

It is mostly treated as a variety or form of Laothoe populi.

This rush is sometimes treated as a variety of Juncus ensifolius.

Some sources treat it as a variety of the species Wigandia urens.

Some authorities prefer to treat it as a variety.

This plant is sometimes treated as a variety of the more common Phacelia scopulina.

This rose is sometimes treated as a variety of Rosa gymnocarpa.

This species is often treated as a variety of Astragalus limnocharis.

It is sometimes treated as a variety of Luzula glabrata.