INDEX TO AMERICAN BOTANICAL LITERATURE II7 
Gardner, M. W. & Kendrick, J. B. Bacterial spot of tomato 
and pepper. Phytopathology 13: 307-315. pl. 14. 28 
JE tga. 
Gericke, W. F. On the adaptation of wheat to growth media 
deficient in nutrients. Science II 58: 17. 6 Jl 1923. 
Gericke, W. F. Some effects of physiological conditions on 
genetic characters of wheat. Am. Jour. Bot. 10: 275- 
277. 2 J) 1023. 
Gilbert, A. H. Correlation of foliage degeneration diseases of 
the Irish potato with variations of the tuber and sprout. 
Jour. Agr. Research 25: 255-266. pl. 1-6. 11 Au 1923. 
Gleason, H. A. Coreopsis verticillata. Addisonia 8: 29. pl. 
277. 23 Ainge 
Gleason, H. A. The Bolivian species of Vernonia. Am. Jour. 
Bot. 10: 297-309. 2 Jl 1923. 
Includes six new species. 
Greenwood, H.E. A contribution to the Hepatic flora of Center 
County, Pennsylvania. Bryologist 26: 36-38. 21 Au 
1923. 
Gyorffy, I. Novitas bryologica—III, IV. Bryologist 26: 38, 
30. f. I-0. . 21 Au ree 
Hall, H. M. Callistemon Renney eee Addisonia 8: 
23, 24. pl. 268. 22 Aul 
Hall, H. M. & Clements, F. E. The phylogenetic method in 
taxonomy.—The North American species of Artemisia, 
Chrysothamnus, and Atriplex. Carnegie Inst. Wash- 
ington Publ. 326: 1-356. pl. 1-58 + f. 1-47. 20 Jl 1923. 
Handel-Mazzetti, H. Nachtrage zur Monographie der Gattung 
Taraxacum. Osterr. Bot. Zeitschr. 72: 254-275. Au 
Hansen, A. A. Columbine. Nat. Mag. 2: 96-98. Au 1923. 
[Illust.] 
Harshberger, J. W. Hemerecology: the ecology of cultivated 
fields, parks, and gardens. Ecology 4: 297-306. 7 Au 
1923. 
