INDEX TO AMERICAN BOTANICAL LITERATURE 593 
Buller, A. H. R. Micheli and the discovery of reproduction in fungi. 
Trans. Roy. Soc. Canada—III. 9!: 1-25. pl. 1-3. Je 1915. 
Butler, O. Observations on the California vine disease. Mem. Torrey 
Club 14: 111-153. pl. r-5. 18 Je 1910. 
Call, R. E. Observations on the flora of Mammoth Cave, Kentucky. 
Mem. N. Y. Bot. Gard. 6: 65-68. 31 Au I1gr6. 
Chivers, A. H. Directing factors in the teaching of botany. Mem. 
N. Y. Bot. Gard. 6: 33-37. 31 Au 1916. 
Clark, F. C. Diatoms. S. Calif. Acad. Sci. Bull. 15: 43-45. Jl 1916. 
[Tllust.] 
Conard, H.S. Nymphaea magnifica. Rhodora 18: 120. 4 My 1916, 
Cook, M. T., & Schwarze, C. A. Two interesting diseases of green- 
house tomatoes. Phytopathology 6: 364-366. f. z. 12S 1916. 
Davidson, A. Additions to the flora of Los Angeles County in 1916. 
S. Calif. Acad. Sci. Bull. 15: 33, 34. Jl 1916. | 
Davidson, A. Opuntia rubiflora n. sp. S. Calif. Acad. Sci. Bull. 15: 
33- Jl 1916. [IIllust.] 
Davis, J. J. Notes on parasitic fungi in Wisconsin—I. Trans. Wis- 
consin Acad. Sci. 18: 78-92;—II. 93-109;—III. 251-271. 1915. 
Includes descriptions of twenty-five hew species. 
Diehl, W. W. Notes on an artificial culture of Rhizoctonia crocorum. 
Phytopathology 6: 336-340. f. 1. 12S 1916. 
Edson, H. A. Histological relations of sugar-beet seedlings and Phoma 
betae. Jour. Agr. Research 5: 55-58. pl. 1-2. 4 0 1915. 
East, E. M. Inheritance in crosses between Nicotiana Langsdor fii 
and Nicotiana alata. Genetics 1: 311-333. f. 1-19. Jl 1916. 
Farr, C. F. Cytokinesis of the pollen-mother-cells of certain Dicoty- 
ledons. Mem. N. Y. Bot. Gard. 6: 253-317. pl. 27-29. 31 Au 
1916. 
Farwell, O. A. The genus Hippochaete in North America, north of 
Mexico. Mem. N. Y. Bot. Gard. 6: 461-472. 31 Au 1916. 
Fernald, M. L. A calciphile variety of Andromeda glaucophylla. 
Rhodora 18: 100-102. 4 My 1916. 
Fink, B. Hermann Edward Hasse—lichenist. Mycologia 8: 243-248. 
pl. 193. 14S 1916. 
Gager, C. S. Present status of the problem of the effect of radium 
rays on plant life. Mem. N. Y. Bot. Gard. 6: 153-160. 31 Au 
1916, 
