410 INDEX TO AMERICAN BOTANICAL LITERATURE 
Shamel, A. D. An orange bud variation. Jour. Heredity 8: 177, 178. 
eo F0.. Ap ISH, 
Sherff, E. E. Siegesbeckia orientalis in Ulinois. Rhodora 19: 74, 75 
Ap 1917. 
Shufeldt, R. W. The dogwood. Am. Forest. 23: 217-220. f. I-5. 
Ap 1917. 
Skinner, J. J. The effect of vanillin and salicylic aldehyde in culture 
solution and the action of chemicals in altering their influence. 
Plant World 19: 371-378. f. 1-3. D 1916. 
Small, J. K. Nolina texana. Addisonia 2: 1, 2. pl. 42. 31 Mr 1917: 
Smith, E. F. Chemically induced crowngall. Proc. Nat. Acad. Sci. 3: 
312-314. 15 Ap 1917. 
Sherbakoff, C. D. Buckeye rot of tomato fruit. Phytopathology 7: 
119-129. f. 1-5. Ap I9I5. 
Phytophthora terresiria sp. nov. 
St. John, H. The status of Glyceria Fernaldii. Rhodora 19: 75, 76. 
17 Ap 1917. 
Stevens, F. L. Noteworthy Porto Rican plant diseases. Phyto- 
pathology 7: 130-134. Ap 1917. 
Stevens, F. L. Problems of plant pathology. Bot. Gaz. 63: 297-306. 
16 Ap 1917. 
Stevens, N. E. Some factors influencing the prevalence of Endothia 
gyrosa. Bull. Torrey Club 44: 127-144. f. 1-5. 27 Mr 1917. 
Tavares, J. S. L’Anacardium occidentale L. an Brésil. Broteria 14: 
123-129. pl. 4,5. 1D 1916 
Tottingham, W. E., & Beck, A. J. Antagonism between manganese and 
iron in the growth of wheat. Plant World 19: 359-370. f. 1, 2. 
D 1916. 
Truog, E. The utilization of phosphates by agricultural crops, including 
a new theory regarding the feeding power of plants. Wisconsin 
Agr. Exp. Sta. Research Bull. 41: 1-50. f. z-1z. N 1916. 
Weniger, W. Development of embryo sac and embryo in Euphorbia 
Preslii and E. splendens. Bot. Gaz. 63: 266-281. pl. 14-16. 16 
Ap 1917. 
Weir, J.R. New hosts for Razoumofskya americana and R. occidentalis 
abietina. Phytopathology 7: 140. Ap 1917. 
Weir, J. R., & Hubert, E. E. Pycnial stages of important forest tree 
rusts. Phytopathology 7: 135-139. f. z, 2. Ap 1917. 
