Engler A & Zahn K H <br/><br/>
Das Pflanzenreich  IV 280  Compositae-Hieracium  Abet 1  Sect I-XXXIX 

 -  Leipzig, Germany 
 - pp 1146;   25*17 
<br/><br/><label>Dewey Class. No.: </label>I:11/N23.4.280/B00082