A genus of about 250 species, herbs and shrubs, of w. North America (a few in se. North America). Like Astragalus, Eriogonum is represented in e. North America by a small number of species restricted to unusually dry habitats, where stranded by past climate changes and migrations.
Ref: Brandbyge (1993) In Kubitzki, Rohwer, & Bittrich (1993); Floden (2022b); Goodman (1947); Nesom (2002a); Reveal (1989); Reveal (2004); Reveal (2005) In Flora of North America Editorial Committee (2005). Show full citations.