Gregory, Walton Carlyle. <br/><br/>
Phylogenetic and cytological studies in the Ranunculaceae 
Walton C. Gregory. 
 - Philadelphia  American Philosophical Society  1941. 
 - 443-520 p.  ill.  30 cm. 
 - Transactions of the American Philosophical Society  New series, v.31, pt.5 .
<br/><br/>Bibliography: p. 493-497. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ranunculaceae.