Anatomy of a mega‐radiation: Biogeography and niche evolution in Astragalus
Ryan A. Folk,
Joseph L. M. Charboneau,
Michael Belitz
et al.
Abstract:PremiseAstragalus (Fabaceae), with more than 3000 species, represents a globally successful radiation of morphologically highly similar species predominant across the northern hemisphere. It has attracted attention from systematists and biogeographers, who have asked what factors might be behind the extraordinary diversity of this important arid‐adapted clade and what sets it apart from close relatives with far less species richness.MethodsHere, for the first time using extensive phylogenetic sampling, we aske… Show more
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