INDEX TO AMERICAN BOTANICAL LITERATURE 405 
Shear, C. L. Grape rust in Florida. Phytopathology 14: 170- 
171. “Me” 22 Ap to24. 
Sherff, E. E. Charles Frederick Millspaugh. Bot. Gaz. 77: 
228-230. 17 Ap 1924. [Portrait.] 
Sievers, F. J. Crop injury resulting from magnesium oxide dust. 
Phytopathology 14: 108-113. f. zr. ‘‘F’’ 20 Mr 1924. 
Smith, C. P. Studiesin the genus Lupinus—X. The Micranthi 
concluded. Bull. Torrey Club 51: 91-102. “Mr’’ 22 Ap 
1924. 
Smith, R.G. A chemical and pathological study of decay of the 
xylem of the apple caused by Polystictus versicolor. Phy- 
topathology 14: 114-118. “‘F”’ 20 Mr 1924. 
Spegazzini, C. Acdcieae Argentinas. Bol. Acad. Ci. Cordoba 
26: 163-334: 1924. [Lllust.] 
Including new species, varieties, and combinations. 
Spegazzini, C. Algunos honguitos Portoriquefios. Bol. Acad. 
Ci. Cordoba 26: 335-368. 1924. [Illust.] 
Including a number of new species and genera of ascomycetes. 
Spegazzini, C. Honguillos exdéticos. Bol. Acad. Ci. Cordoba 
26: 269-403. 1924.  [Illust.] 
Including new species, genera, and combinations. 
Sprague, T. A. Notes on Mexican Tiliaceae. Jour. Bot. 62: 
106-108. Ap 1924. 
Stackman, E. C., & Aamodt, O. S. The effect of fertilizers on 
the development of stem rust of wheat. Jour. Agr. Re- 
search 27: 341-380. pl. 1-3. 9 F 1924. 
Staneliff, J.O. TahitiLycopodiums. Am. Bot.30:80-81. Ap 
1924. 
Stevens, N. E. Notes on the cranberry fungi in Massachusetts. 
Phytopathology 14: ro1-107.  “‘F’’ 20 Mr 1924. 
Stevens, O. A. What is a weed? Science II. 59: 360-361. 
18 Ap 1924. 
