CONTRIBUTIONS FROM THE NEW YORK BOTANICAL 



GARDEN— No. 104 



STUDIES m THE NORTH AMERICAN CON- 

 VOLVULACEAE-IV. THE GENUS 

 EXOGONIUM 



By homer DOLIVER HOUSE 



NEW YORK 

 1908 



Reprinted, without change of pagring, from the Bcllktin of thb Tobbiy Botanical 



CLUB 36: 97-107. pM, 2. 1908. 



