634 INDEX TO AMERICAN BOTANICAL LITERATURE 
Davis, W. T. Additional facts concerning the hybrid oaks Quercus 
nana X Quercus marylandica (Q. Brittoni Davis). Proc. Staten 
Island Assoc. Arts & Sci. 4: 110, 111. 1 Au 1914. 
Dewey, L.H. Hemp. Dept. Agr. Yearbook 1913: 283-346. pl. 40- 
es oe ca gee 1) 
Includes a chapter on ‘‘ Botanical study of hemp,” Cannabis sativa L. 
Dixon, R. The human side of plants. i-xviii + 1-201. New York. 
S 1914. [Illust.] 
Duggar, B. M., & Cooley, J. S. The effects of surface films on the 
rate of transpiration: experiments with potted potatoes. Ann. 
Missouri. Bot. Gard. 1: 351-356. pl. r8. 30S 1914. 
Dunlap, F. Density of wood substance and porosity of wood. Jour. 
Agr. Research 2: 423-428. 21S 1914. 
Eckerson, S. Thermotropism of roots. Bot. Gaz. 58: 254-263. f. 
I-6.. 15. 5 1914. 
Fernald, M. L. The American variations of Stellaria borealis. Rho- 
dora 16: 144-151. 17 Au 1914. 
Fernald, M. L., & St.John, H. Nymphaea variegata or N. americana?. 
Rhodora 16: 137-141. 17 Au 1914. | 
Ford, W. W., & Clark, E. D. Deadly poisonous fungi. Jour. N. Y. 
Bot. Gard. 15: 159-168. Au 1914. 
Fromme, F. D. A new gymnosporangial connection. Mycologia 6: 
226-230. S 1914. 
Gymnosporangium myricatum comb. nov. 
Fuller, G. D.. Evaporation and soil moisture in relation to the suc- 
cession of plant associations. Bot. Gaz. 58: 193-234. f. I-27: 
15 S 1914. 
Garrett, A. O. The smuts and rusts of Utah—II. Mycologia 6: 
240-258. S 1914 
Includes descriptions of Puccinia Rydbergii, P. tardissima, and P. Clementis, 
spp. nov. 
Getman, M. R. Oogenesis in Hormosira. Bot. Gaz. 58: 264-271. 
pl. 20 +f. 1-7. 15S 1914. 
Gile, P. L., & Ageton, C. N. The effect of strongly calcareous soils 
on the growth and ash composition of certain plants. Porto Rico 
Agr. Exp. Sta. Bull. 16: 1-45. pl. Ig. 47S 1914. 
Greenman, J. M. Descriptions of North American Senecioneae. 
_ Ann. Missouri Bot. Gard. 1: 263-290. pl. 10-14. 30 S 1914. 
Includes Senecio velatus sp. nov. 
same 
Seo here ae a A 
