INDEX TO AMERICAN BOTANICAL LITERATURE 307 
Stevenson, J. & Rose, R. C. Vegetable diseases. Ann. Rep. Ins. 
Exp. Sta. Porto Rico 1917: 83-98. 1917. 
Includes Cercospora acrocomiae and Tubercularia coccicola, spp. nov. 
Stewart, F. C., & Mix, A. J. Blackheart and the aeration of potatoes 
in storage. New York Agr. Exp. Sta. Bull. 436: 321-362. pl. 1-10. 
Je 1917. 
Stout, A.B. Observations on tulips—II. Jour. Hort. Soc. New York 
2: 235-243. pl. go-g2. F 1918. 
Stout, A. B. Fertility in Cichorium intybus: self-compatibility and 
self-incompatibility among the offspring of self-fertile lines of de- 
scent. Jour. Genetics 7: 71-103. pl. 4-6. 9 F 1918 
Tanaka, T. New Japanese fungi. Notes and translations—IV. My- 
cologia 10: 86-92. Mr 1918. 
Tenopyr, L. A. On the constancy of cell shape in leaves of varying 
shape. Bull. Torrey Club 45: 51-76. f. r. 7 Mr 1918. 
Thom, C., & Church, M. B. Aspergillus fumigatus, A. nidulans, A. 
terreus n. sp. and their allies. Am. Jour. Bot. 5: 84-104. f. I-3. 
9g Mr 1018. 
Thomas, H. E. Cultures of Aecidium tubulosum and A. passifloriicola: 
Phytopathology 8: 163, 164. 30 Ap 1918. 
Valleau, W. D. Sterility in the strawberry.. Jour. Agr. Research 12: 
613-670. pl. BE + 35, 36. 11 Mr 1918. 
[Vries, H. de.] Hugo de Vries opera e periodicis collata. Vol. 1: 1- 
630. Utrecht. 1918. 
Waller, A. E. Crop centers of the United States. Jour. Am. Soc. 
Agron. 10: 49-83. f. 5-12. F 1918. 
Walton, L. B. Entetramorus globosus. A new genus and species of 
algae belonging to the Protococcoidea (Family Coelastridae). Ohio 
Jour. Sci. 18: 126-128. f. 1. F 1918. 
Weatherwax, P. A remarkable case of fasciation in Oenothera biennis. 
Proc. Indiana Acad. Sci. 1916: 363, 364. 1917. [Illust.] 
Weatherwax, P. A variation in Plantago lanceolata. Proc. Indiana 
Acad. Sci. 1916: 365-367. f. I, 2. 1917. 
Weaver, J. R. The effect of certain rusts upon the transpiration of 
their hosts. Minnesota Bot. Stud. 4: 379-406. pl. 41, 42 + f. I-9. 
20 S 1916. 
Weir, J. R., & Hubert, E. E. Notes on forest tree rusts. Phyto- 
pathology 8: 114-118. Mr 1918. 
