282 INDEX TO AMERICAN BOTANICAL LITERATURE 
Standley, P.C. The genus Choisya. Proc. Biol. Soc. Washington 27. 
221-224. 29 D 1914. 
Three new species are described. 
Standley, P.C. A new genus of Chenopodiaceae from Arizona. Jour. 
Washington Acad. Sci. 5: 57-59. 19 Ja 1915. 
Zuckia gen. nov. is described. 
Standley, P. C. The North American tribes and genera of Amaran- 
thaceae. Jour. Washington Acad. Sci. 5: 391-396. 4 Je 1915. 
Standley, P. C. Some ferns of Dutchess County, New York, Am. 
Fern Jour. 6: 1-7. Mr 1916. 
Sudworth, G. B. The spruce and balsam fir trees of the Rocky Moun- 
tain region. U. S. Dept. Agr, Bull. 327: 1-43. pl. 1-25 + maps 
I-Io. 19F 1916. 
Taubenhaus, J. J. Soil stain, or scurf of the sweet potato. Jour. Agr. 
Research 5: 995-1002. pl. 76, 77. 21 F 1916. 
Temple, C. E. Diseases and insect pests of the potato. Idaho Agr. 
Exp. Sta. Bull. 79: 40-67. f. 1-14. Ap 1914. 
Thériot, I. Une rectification. Bryologist 19: 10. Ja 1916. 
Thone, F. E. A. Pioneer plants on a new levee. Proc. Iowa Acad. 
Sci. 22: 135-142. f. 3. 1915. 
True, R. H.; & Stockberger, W. W. Physiological observations on 
alkaloids, latex and oxidases in Papaver somniferum. Am, Jour. 
Bot. 3: 1-11. 5 F 1916. 
True, R. H., & Bartlett, H.H. The exchange of ions between the roots 
of Lupinus albus and culture solutions containing three nutrient 
salts. Am. Jour. Bot. 3: 47-57. f. 1-3. 4 Mr 1916. 
Victorin, M. Prenanthes mainensis: notes on the morphology, tax- 
onomy and distribution of this hybrid form. Ottawa Nat. 29: 1407 
145. F 1916. [Illust.] 
Weatherby, C. A. Staminody of the petals in Amelanchier. Rhodora 
18: 48, 49. 13 Mr 1916. 
Weaver, J. E. A study of the root-systems of prairie plants of south- 
eastern Washington. Plant World 18: 227-248. f. 1-9. S 1915) 
273-292. f. 10-18. O 1rg15. 
Weir, J. R. Larch mistletoe: some economic considerations of its 
injurious effects. U.S, Dept. Agr. Bull. 317: 1-25. f. 1-13- 20J 
1916. 
Weir, J. R., & Hubert, E. E. Inoculation experiments with Pert 
dermium montanum. Phytopathology 6: 68-70. F 1916. 
