Hale, Mason E., Jr. <br/><br/>
A monograph of the lichen genus Parmeliacea ascharius sensu stricto (Ascomycotina : Parmeliaceae) 

 - Washington :  Smitsonian Institution,  1987 
 - 55 p.  : ilus. 
 - Smithsonian contributions to botany  ; 66 .
 - Smithsonian contributions to botany  ; 66 .
<br/><br/> 27-108 
<br/><br/><label>LCCN: </label>68225 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Líquenes.<br/>Parmeliaceas.