510 INDEX TO AMERICAN BOTANICAL LITERATURE 
Weniger, W. Fertilization in Lilium. Bot. Gaz. 66: 259-268. pl. r1- 
Fz. 16:5 1938, 
Wieland, G. R. The origin of dicotyls. Science II. 48: 18-21. 5¥J. 
1918. 
Williamson, E. B. A collecting trip to Colombia, South America. 
Univ. Michigan Mus. Zoo. Misc. Publ. 3: 1-24. 22 F 1918. 
Wodehouse, R. P. Direct determination of permeability. Jour. 
Biol. Chem. 29: 435-458. 1917. 
Wolf, W. Quercus bernardiensis sp. nov. Torreya 18: 161, 162. 7S 
1918. 
Woodward, R. W. Some Connecticut plants. Rhodora 20: 97, 98. 
1 My 1918. 
Woodward, R. W. Some Rhode Island grasses. Rhodora 20: 116. 
11 Je 1918. 
Woodward, R. W. A Salix rostrata hybrid? Rhodora 20: 132. ° 39 
1 1918. 
Young, H. C., & Cooper, E. H. A method for determining the fungi- 
cidal coefficient of lime sulphur and other common fungicides. 
Ann. Rep. Michigan Acad. Sci. 19: 241-236. .10Ty. 
Young, V. H. Some factors affecting inulase formation in Aspergillus 
miger. Plant World 21: 75-87. Ap 1918. 
Zeller,S.M. An interesting fungus from F riday Harbor, Washington. 
Publ. Puget Sound Biol. Sta. 2: 95,96. 1 Jl 1918. 
Rhizopogon diplophloeus. 
Zimmerman, H. E. A tree that owns itself. Am. Bot. 24: 81, 82. 
Au 1918. [IIlust.] 
