Rupert C. Barneby and Pugillus Astragalorum

Rupert C. Barneby, his monumental contributions to the taxonomy ofAstragalus and his place among American botanists, is discussed. His twenty contributions in the seriesPugillus Astragalorum spanned fifteen years of his botanical development from an interested naturalist to an accomplished taxonomist in this extremely species-rich genus. Barneby’s work onAstragalus culminated in the 1188 pages of theAtlas of North American Astragalus, which treated of 552 taxa and was published in 1964.