Flora of North America north of Mexico / 
edited by Flora of North America Editorial Committee 
 - New York :  Oxford University Press,  1993 
 - 2 v. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0195057139  v.1 0195082427  v.2  RM179.79 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--North America<br/>Botany--United States<br/>Botany--Canada