Ayensu, Edward S. <br/><br/>
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. 
<br/><br/> Ed. of 1975, by the Smithsonian Institution, published under title: Report on endangered and threatened plant species of the United States. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0874742226 9780874742220 
<br/><br/><label>LCCN: </label>77025138 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rare plants--United States.<br/>Plant conservation--United States.<br/>Plantes rares--�Etats-Unis.<br/>Plantes--Conservation--�Etats-Unis.
<br/><br/><label>LC Class. No.: </label>QK86.U6  / A93 1978