494 INDEX TO AMERICAN BOTANICAL LITERATURE 
Wilson, E. H. Where orchids are at home—II. Tropical 
orchids of the new world. Gard. Mag. 39: 357-360. “Jl” 
Je 1924. [Llust.] 
Wolf, T. K. <A biometrical analysis of characters of maize and 
of their inheritance. Virginia Agr. Exp. Sta. Technical 
Bull. 26: 1-70. f. 1-26. F 1924. 
Wolff, H. Azorellopsis, genus novum Umbelliferarum Bolivi- 
anum. Repert. Sp. Nov. Regn. Veg. 19: 312. F 1924. 
Wolpert, F. S. Studies in the physiology of the fungi. XVII. 
The growth of certain wood-destroying fungi in relation to 
the H-ion concentration of the media. Ann. Missouri 
Bot. Gard. 11: 43-97. f. 7-18. “F’ 25 Jl 1924. 
Woodard, J. Origin of prairies in Illinois. Bot. Gaz. 77: 241- 
261. 19 My 1924. 
Woolman, H. M., & Humphrey, H.B. Studies in the physiology 
and control of bunt, or stinking smut, of wheat. U. S. 
Dept. Agr. Bull. 1239: 1-29. pl. 1-5. f. 1-3. My 1924. 
Zeller,S. M. Sphaeropsis Malorum and Myxosporium corticola 
on apple and pear in Oregon. Phytopathology 14: 329-333. 
21 Jl 1924. 
Aldous, A. E.,& Shantz, H. L. Types of vegetation in the semi- 
arid portion of the United States and their economic signifi- 
cance. Jour. Agr. Res. 28: 99-128. pl. 1-16. 12 Ap 1924, 
Anderson, R. J., & Nabenhauer, F. P. A contribution to the 
chemistry of grape pigments. II. Concerning the anthocyans 
in Clinton grapes. Jour. Biol. Chem. 61:97-107. Au 1924. 
Artschwager, E. Studies on the potato tuber. Jour. Agr. Res. 
27: 809-839, f. 1-8 + pl. 1-10. 15 Mr 192 
Bartram, E. B. Studies in Tortula as represented in southern 
Arizona. Bull. Torrey Club 51: 335-340, pl. 6, 7. 22 Au 
1924. 
Berry, E. W. An Oligocene cashew nut from South America. 
Am. Jour. Sci. 8: 123-126. f. 7-8. Au 1924. 
Including Anacardium peruvianum Berry, n. sp. 
