CONTRIBUTIONS FROM THE NEW YORK BOTANICAL 



GARDEN— No. 57 



STUDIES IN THE ASCLEPIADACEAE-VIII 



A NEW SPECIES OF ASCLEPIAS FROM KANSAS AND TWO 

 POSSIBLE HYBRIDS FROM NEW YORK 



By ANNA MURRAY VAIL 



NEW YORK 



1904 



[From the Bulletin of the Torrey Botanical Club, 31 : 457-460, pi. 16-19. Sept., 1904] 



