CONTRIBUTIONS FROM THE DEPARTMENT OF 

 BOTANY OF COLUMBIA UNIVERSITY. 



No. lo^. 



Notes on Potentilla. — IV. 



(Plates 274 and 275.) 



BY P. A. RYDBERG. 



[Reprinted from The Bulletin of the Torrev Botanical Club, Vol. 23, No. 10, Oct. 1896.] 



■i! 



