The taxonomic study of which the results are presented in this volume encompasses that group of Papilionaceous Leguminosae characterized by the presence of specialized oil-cells ("glands") in the epidermis of the foliage, simple basifixed hairs, and a small, mostly 1-2-ovulate, indehiscent, nearly always 1-seeded pod, which have at one time or another been referred by botanists to the genus Dalea. Included in the comprehensive treatment are diagnostic keys, genus and species descriptions, habitat and distribution information, and black-and-white botanical illustrations.
