658 INDEX TO AMERICAN BOTANICAL LITERATURE 
Wernham, H. F. New Rubiaceae from tropical America—V. Jour. 
Bot. §2: 313-316. D 1914. 
Wheeler, L.A. Notes on the plants of the West river valley. Vermont 
Bot. and Bird Club Joint Bull. 2: 17. Ap 1916. 
Wille, N. Om Udbredelsen af Artemisia norvegica Fr. Bot. Not. 1916: 
1399-1737. 2916. 
Zimmermann, C. Contribuicio para o estudo das diatomaceas dos 
estados unidos do Brazil. Broteria’r1: 149-164. D 1913. 
