Payson, Edwin Blake,  1893-1927. <br/><br/>
The North American species of Aquilegia. 
By Edwin Blake Payson. 
 - Washington,  Govt. print. off.,  1918. 
 - vii, 133-157, ix p.  pl. 9-14.  24 cm. 
 - Smithsonian institution. United States National museum.  Contributions from the United States national herbarium.  v. 20, pt.4 .
<br/><br/><label>LCCN: </label>agr18000806  
<br/><br/><label>LC Class. No.: </label>QK1  / .U5 vol. 26, pt. 4