352 INDEX TO AMERICAN BOTANICAL LITERATURE 
Sydow, H. & P. Notizen iiber einige interessante oder wenig bekannte 
Pilze. Ann. si hl 18: 178-187. Ap 1921. 
Includes Rhizogene gen 
Taylor, M. A. The sits [Scrophulariaceae] of Ohio. Ohio Jour. 
Sci. 21: 217-239. My 1921. 
Tisdale, W. H., & Griffiths, M.A. Flag smut of wheat and its control. 
U. S. Dept. Agr. Farm. Bull. 1213: 1-6. f. 1, 2. My 1921. 
Trelease, S. F. The relation of salt proportions and concentrations to 
the growth of young wheat plants in nutrient solutions containing 
chloride. Philipp. Jour. Sci. 17: 527-603. f. 1-12. 20 Ap 1921. 
Ule, E. Die Vegetation des Amazonasgebietes. Verh. Bot. Ver. 
Brandenburg 57: 56-75. f. I-4. 20 Je 1915. 
Urban, I. Sertum antillanum, X. Repert. Spec. Nov. Regn. Veg. 
: : Ja 1921. 
Includes Penelopeia gen. nov., and new species in Exostema (1), Guettarda (1) 
Uragoga (1), and Eupatorium (5). 
Urban, I. Sertum pein XI. Repert. Spec. Nov. Regn. Veg. 
17: 49-54. 1 Ap 19: 
Includes new species in paren (7), Aster (1), Erigeron (1), and Pectis (2). 
Weimer, J. T., & Harter, L. L. Glucose as a source of carbon for 
certain sweet potato storage-rot fungi. Jour. Agr. Research 21: 
189-210. 16 My Ig2t. 
Weiss, H. B. Diptera and fungi. Proc. Biol. Soc. Washington 34: 
85-88. 30 Je 1921 
Wells, B. W. A method of teaching the evolution of the land plants. 
Torreya 21: 45-47. [with diagram]. Je 1921 
Weston, W. H. The occurrence of wheat downy mildew in the United 
States. U.S. Dept. Agr. Dept. Circ. 186: 1-6. Je 1921. 
Wetmore, A. Wild ducks and duck foods_of the Bear River marshes, 
Utah. U.S. Dept. Agr. Bull. 936: 1-20. pl. 1-4. 31 My 192I. 
Section on ‘‘ vegetable foods’’ gives the abundance of each species. 
Winslow, C.-E. A. William Thompson seek Jour. Bact. 6: 
255-262. My 1921. [With portrait.] 
In his earlier years Professor Sedgwick published some botanical papers 
Young, M. S. The seed plants, ferns, and fern allies of the ‘Aisin 
[Texas] region. Univ. Texas. Bull. 2065: 1-98. 20 N 1920. 
Zahn, K. H. ae Ama Hieracium [pars]. Pflanzenreich IV. 280: 
1-288. f. 1-27. 4F 1 
Zundel, G. L. Smuts sey rusts of northern Utah and southern Idaho. 
Mycologia 13: 179-183. 25 Je 1921. 
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