Hansen, Ove J. <br/><br/>
The genus cycnium beth emend. Engl. (scrophulariaceae):   a taxonomy revision 

 - Kobenhavn:  Dansk Botanisk Arkiv,  1978 
 - 72p.  ill.  24cm. 
<br/><br/>Bibliography: p.70-72 
<br/><br/><label>ISBN: </label>877420-0194 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cycnium<br/>Botany<br/>Classification
<br/><br/><label>LC Class. No.: </label>BOT PAM QK495.S43H36