[Wikipedia] Taxonomy: Berberis nervosa was scientifically described and named by German-American botanist Frederick Traugott Pursh in 1813.[1][9] In 1818 Thomas Nuttall placed it in the new genus Mahonia as Mahonia nervosa.[1][10] A paper was published by Joseph Edward Laferrière in 1997 summarized the arguments in favor of Berberis as the correct classification.[11][12] As of 2023 most botanists place the entire genus Mahonia within the genus Berberis[13] including Plants of the World Online (POWO) and World Flora Online.[1][14] (link added by Mary Ann Machi)