Reprinted from: Proceedings of the American Academy of Arts and Sciences, vol. 20, pp. 257-310.
A revision of some Borragineous genera (pp. 257-286); Notes on some American species of Utricularia (pp. 287-290); New genera of Arizona, California, and their Mexican borders, and two additional species of Asclepiadaceae (pp. 290-296); Gamopetalae miscellaneae (pp. 297-310).