60 INDEX TO AMERICAN BOTANICAL LITERATURE 
Doolittle, S. P. Comparative susceptibility of European and 
American varieties of cucumbers to bacterial wilt. Phyto- 
pathology 12: 143-149. 6 Je 1922. 
Douglas, B. The new Aliernaria spot of tomatoes in Cali- 
fornia. Phytopathology 12: 146-148. f. z. 6 Je 1922. 
Duggar, B. M., & Karrer, J. L. The sizes of the infective 
particles in the mosaic disease of tobacco. Ann. Missouri 
Bot. Gard. 8: 343-356. N 1921. 
DuMond, F. L. Branch orders and tolerance. Jour. For. 20: 
448-462. My 1922. 
Durland, W. D. The forests of the Dominican Republic. 
Geographical Rev. 12: 206-222. f. 1-8. Ap 1922. 
Evans,A.W. Notes on New England Hepaticae—XVI. Rho- 
dora 23: 281-284. 22 Ap 1922. 
Evans, A. W. Notes on North American Hepaticae—IX. 
Bryologist 25: 25-33. pl. z. Mr 1922. 
‘Includes Diplophyllum Andrewsii Sp. NOV. zy. 
Evans, C. R. Effect of temperature on ee of Amaran- 
thus reflexus. Bot. Gaz. 73: 213-225. f. 1-4. Mr 1922. 
Eyer, J. R. Notes on the etiology and specificity of the potato 
tip burn produced by Empoasca mali Le Baron. Phyto- 
pathology 12: 181-184. pl. 14 +f. 7. 29 Je 1922. 
Fairman, C. E. New or rare fungi from various localities. Proc. 
Rochester Acad. Sci. 6: 117-139. sn = 22. Ap 1922. 
Includes 2 gen. nov. 36 spp. nov. and 3 var. 
Farwell, O. A. Botanical source of the cola nut of commerce. 
Am. Jour. Pharm. 94: 428. Je 1922 
Fassett, N. C. Lophotocarpus on the northeastern river estuaries. 
Rhodora 24: 71-73. pl. 137. 20 Je 1922. 
L. calycinus var. spongiosus n. com 
Ferguson, W. C. Some interesting plants from Long Island, 
N. Y. Torreya 22: 43-49. Je 1922. 
Fernald, M.L. Brassica arvensis, var. Schkuhriana (Reichenb.) 
n. comb. Rhodora 24: 36. 23 My 1922. 
