The North American species of Rhamnus 

 - California  Rancho Santa Ana Botanic Garden of the Native Plants of California   1938 
 - p. 1-136  62 il., 
 - Monographs. Rancho Santa Ana Botanic Garden of the Native Plants of California. Botanical series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>RHAMNACEAE<br/>FRUTOS<br/>ESTADOS UNIDOS<br/>INFLORESCENCIA<br/>TAXONOMIA<br/>HOJAS<br/>RHAMNUS