Endangered and threatened plants of the United States /
Edward S. Ayensu and Robert A. DeFilipps, with the assistance of Sam E. Fowler ... [et al.].
- Washington : Smithsonian Institution, 1978.
- xv, 403 p. ; 29 cm.
Ed. of 1975, by the Smithsonian Institution, published under title: Report on endangered and threatened plant species of the United States.
Includes bibliographical references.
0874742226
77025138
Rare plants--United States. Plant conservation--United States.