Gundersen, Alfred,  1877- <br/><br/>
Families of dicotyledons / 
With introductory chapters by Chester A. Arnold ... [et al.] Drawings by Maud H. Purdy 
 - Waltham, Mass. :  Chronica botanica,  1950 
 - xvii, 237 p. :  ill. ;  23 cm. 
 - A New series of plant science books ;  v. 25 .
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dicotyledons