CONTRIBUTIONS FROM THE DEPARTMENT OF 

 BOTANY OF COLUMBIA UNIVERSITY.— No. 112. 



An Apparently Undescribed Species of Prunus 

 from Connecticut. 



(Plate 292.) 



A New Polygonum from Bolivia. 



(Plate 293.) 



The Relation Between the Genera Thysanella and 



Polygenella as Shown by a Hitherto 



Unobserved Character. 



BY JOHN K. SMALL. 



[Reprinted from The Bulletin of the Torrey Botanical Club, Vol. 24, No. i, January 28, 1897.] 



