228 INDEX TO AMERICAN BOTANICAL LITERATURE 
Boerker, R. H. D. Our national forests. i-Ixix + 1-238. f. I1-8o. 
New York. 1918. 
Boerker, R. H. Some fundamental considerations in the prosecution 
of silvicultural research. Jour. Forest. 16: 792-887. D 1918. 
Britton, E. G. West Indian mosses in Florida. Bryologist 22: 2. 
20 F Ig19. 
Buchanan, R. E. Studies in the classification and nomenclature of the 
bacteria—X. Subgroups and genera of the Myxobacteriales and 
Spirochaetales. Jour. Bact. 3: 541-545. N 1918. 
Buswell, W. M. The roselle. Am. Bot. 25:14,15. F 1919. [Illust.] 
{Clute, W. N.] Note and comment. Am. Bot. 25: 24-33. 
Include notes on Laurel philology, Resistant chestnut, The species conception, 
Algae migration, Dwarf shore floras, etc. 
Clute, W. N. The opening of flowers. Gard. Chron. Am. 23: 87, 88. 
r 1919 
Cockerell, T. D. A. Notes on Lycaste. Torreya 19: 10-12. 21 F 
1919. / 
Lycaste alba sp. nov. is described. 
Colley, R. H. Parasitism, morphology, and cytology of Cronartium 
ribicola. Jour. Agr. Research 15: 619-660. pl. 48-59 +f. I. 23 
D 1918. 
Cook, M. T. Byron David Halsted. Bot. Gaz. 67: 169, 170. 15 F 
1919. [Portrait]. 
Cook, M. T. Common diseases of ornamental plants. New Jersey 
Agr. Exp. Sta. Circ. 97: 1-23. f. I-10. 1 Mr 1918. 
Cook, M. T. Common diseases of shade and ornamental trees. New 
Jersey Agr. Exp. Sta. Circ. 98: 1-27. f. r-1r. 1 Mr 1918. 
Davis, B. M. The segregation of Oenothera brevistylis, from crosses 
with Oe¢enothera Lamarckiana. Genetics 3: 501-533. f. 1-7. N 
1918. 
Drechsler, C. Morphology of the genus Actinomyces—II. Bot. Gaz. 
67: 147-168. pl. 2-9. 15 F 1919. 
Drummond, B. Propagation and culture of the date palm. U. S. 
Dept. Agr. Farm. Bull. 1016: 1-22. f. 1-10. Ja 1919. 
Elliot, J.A. AsmutonTJresine. Mycologia 11: 87,88. f.1. 17 Mr1919.- 
Tolyposporium iresine sp. nov. 
Ferguson, W. C. Plants in flower in the autumn of 1918 on Long Is- 
land, N. Y... Torreya 19: 12, 13.. 21 F 1619: 
