﻿548 Index to American botanical literature 



Wille, N. The flora of Norway and its immigration. Ann. Missouri 



Bot. Card. 2: 59-108. /• i~6. 17 My 1915. 

 Willis, J. C. The origin of the Tristichaceae and Podostemaceae. 



Ann. Bot. 29: 299-306. Ap 1915. 

 Wilson, O.T. The crown-gall of alfalfa. Science II. 41 : 797. 28 My 



