Lichen flora of the Greater Sonoran Desert Region :  Volume 1 (the pyrenolichens and most of the squamulose and macrolichens) / 
Thomas H. Nash III. 
 - Tempe, Arizona, USA :  Arizona State University,  2002. 
 - 532 p. :  il., mapas ;  24 cm. 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>0971675902  Normal 
<br/><br/><label>Dewey Class. No.: </label>579.7