Mechanical pencil shown for scale. Pygmy pussypaws was documented in Rock Creek in the 1930s; no subsequent reports of its occurrence there until its rediscovery in 2013.
specimens in UC/JEPS previously filed as Brickellia arguta B. L. Rob. var. arguta are now filed as Brickellia atractyloides A. Gray var. arguta (B. L. Robinson) Jeps. [reflecting circumscriptions and nomenclature used in Flora North America in a treatment authored by Randall W. Scott, Author of Brickellia for The Jepson Manual [Ed. 2]].