482 INDEX TO AMERICAN BOTANICAL LITERATURE 
Berry, E. W. Upper Cretaceous floras of the eastern gulf region in 
Tennessee, Mississippi, Alabama, and Georgia. U.S. Geol. Surv. 
Dept. Int. Prof. paper 112: 1-177. pl. 1-33 +f. I-12. 1919. 
Includes descriptions of 42 new species and 3 new genera in various families, 
several new varieti 1es, and new combinations. 
Blasdale, W. C. A preliminary list of the Uredinales of California. 
Univ. Calif. Publ. Bot. 7: 101-157. 14 Au 1919. 
Bonazzi, A. On nitrification—III. The isolation and description of 
the nitrite ferment. Bot. Gaz. 68: 194-207. pl. 14. 16S 1919. 
Bérgesen, F. A new moss collected in Blue Mountains, Jamaica. 
Bot. Tidsk. 36: 279, 280. 1919. [Illust.] 
Anoectangium incrassatum sp. nov. 
Britton, E. G. Mosses from Florida collected by Severin Rapp. 
Bryologist 21: 27, 28. Jl 19109. 
Britton, N. L. A large tulip tree struck by lightning. Jour. N. Y. 
Bot. Gard. 20: 160. Au 1919. 
Burger, O. F. Sexuality in Cunninghamella. Bot. Gaz. 68: 134-146. 
15 Au 1919. 
Burnham, S. H. Hepaticae of the Lake George flora. Bryologist 22: 
32-37. 8S 1919. 
Burnham, S. H. The sedges of the Lake George flora. Torreya 19: 
125-136. 10:5). 1916, 
Byars, L. P., Johnson, A. G., & Leukel, R. W. The wheat nemotode 
Tylenchus tritici, attacking rye, oats, spelt, and emmer. Phyto- 
pathology 9: 283, 284. pl. 18. 29 Jl 1919. 
Card, F. W. Bush-fruits. i-xiii + 1-409. pl. 1-16 +f. 1-58. . New 
York. 1919. 
Carleton, M. A. The small grains. i-xxxii + 1-699. f. 1-181. 
New York. 1919. 
Chamberlain, E. B. A herbarium note. Bryologist 22: 39, 40. 85 
1919. 
Clute, W. N. Causes that produce the colors of plants. Gard. Chron. 
Am. 23: 232, 233. Jl 1919. 
Clute, W. N. The structure of plants.. Gard. Chron. Am. 23: 475) _ 
476, 478. Au IgI9.- 
Cockerell, T. D. A. The girasole or Jerusalem artichoke. Mo. Bull. : 
State Comm. Hort. Calif. 8: 243-250. f. ro8-114. My 1919. : 

