614 INDEX TO AMERICAN BOTANICAL LITERATURE 
Brown, N. E. Philodendron Broadwayi. Kew Bull. Misc. Inf. 1912: 
343, 344. S 1912. 
A plant from the West Indies. 
Brown, N. E. Xanthosoma cordifolium. Kew Bull. Misc. Inf. 1912: 
RES. SOL: 
A plant from British Guiana. 
Brown, P. E. Bacteriological studies of field soils—I. The effects of 
liming. Centralb. Bakt. Zweite Abt. 35: 234-248. 16 S 1912; 
—II. The effects of continuous cropping and various rotations. 
Centralb. Bakt. Zweite Abt. 35: 248-272. 16S 1912. 
Castillo, L. Ensayo de biolojia comparada entre plantas i animales. 
Bol. Bosques, Pesca i Caza 1: 46-54. Jl 1912. 
Clapp, G. L. The life history of Aneura pinguis. Bot. Gaz. 54: 177- 
193. pli O-T2. 21S 1912. 
Clarke, C. H. A suggestion for summer observations. Rhodora 14: 
177-184. pl. 97-99. 30S 1912. 
Clute, W. N. Nephrodium deltoideum. Fern Bull. 20: 20, 21. Au 
1912. [Illust.] 
Clute, W. N. Phlox argillacea. Am. Bot. 18: 65, 66. Au 1912. 
[Illust.] 
[Clute, W. N.] Pteridographia. Fern Bull. 20: 26-28. Au 1912. 
Contai t (1) New Panama club mosses. (2) Filmy ferns in dry regions. 
(3) The bracken as a weed. (4) Alaska fern. (5) Woodwardia on Cape Cod. 
[Clute, W. N.] Rare forms of fernworts—XXI. Another form of the 
Christmas fern. Fern Bull. 20: 24, 25. Au 1912. ° 
Clute, W. N. The yellow butterfly weed. Am. Bot. 18: 71-73. Au 
Cockerell, T. D. A. Tragopogon in Colorado. Torreya 12: 244-247- 
4 O 1912. 
Coons, G. H. Some investigations of the cedar rust fungus—Gymno- 
sporangium Juniperi-virginianae. Ann. Rept. Agr. Exp. Sta. Univ. 
Nebraska 25: 217-242. pl. 1-3. 1912. 
Cunningham, G. C. The comparative susceptibility of cruciferous 
plants to Plasmodiophora Brassicae. Phytopathology 2: 138-142. 
Au 1912. 
Darling, C. A. Handbook of the wild and cultivated flowering plants. 
vii-vili + 1-264. Syracuse. 16 O 1912. 
Dodge, C.K. The fern flora of Michigan. Fern Bull. 20: 6-19. Au 
1912. 
Drummond, J. R. Agave disceptata. Curt. Bot. Mag. IV. 8: pl. 8451. 
Au 1912. 
From Central America? 
