A good collection of nine paperback monographs on Leguminosae, issued by the Unites States National Herbarium, some of them now becoming increasingly scarce. A Revision of the Genus Chaetocalyx. [Velva E. Rudd]. 1958. Illustrated with 13 line drawings in the text, 38 pages, a very good copy. A Revision of the Genus Nissolia.[Velva E. Rudd]. 1956. Illustrated with a few distribution maps, 33 pages, a very good copy. The American Species of Aeschynomene. [Velva E. Rudd]. 1955. Illustrated with a few distribution maps, 172 pages, a very bright copy. Notes on Some Brazilian and Other Leguminosae. [Velva E. Rudd]. 1957. 7 pages, a very bright copy. The American Species of Ormosia. [ Velva E. Rudd]. 1965. Illustrated with 15 line drawings, 6 monochrome plates, and distribution maps, 105 pages, a very bright copy. The Lecythidaceae of Costa Rica [ H. Pittier de Fabrega]. 1908. Illustrated with 8 photographic plates, 16 pages, the covers just slightly age-toned. [Also includes two other very short articles]. The Lecythidaceae of Central America. [H. Pittier]. 1927. Illustrated with 12 photographic plates, 14 pages, the covers slightly age-toned, lacking a tiny piece near the spine head. A Resume of Ateleia and Cyathostegia. [Velva E. Rudd]. 1968. Illustrated with 9 plates, 26 pages, one page with a slight tear to the fore-margin, otherwise very good. The Genus Dussia. [Velva E. Rudd]. 1963. Illustrated with 11 botanical line drawings, 30 pages, a very bright copy.