INDEH TO AMERICAN BOTANICAL LITERATURE 503 
Trelease, W. The genus Phoradendron. A monographic revision. 
1-224. pl. I-245+frontispiece. Urbana. 1916. 
Includes descriptions of 105 new species and several new varieties, new combina- 
tions and new names. 
Victorin, M. La flore du Témiscouata. Le Naturaliste Canadien 42: 
51-59. O 1915; 68-79. N 1915; 106-111. f. 72. Ja 1916; 12I- 
126. f. rz. F 1916; 136-143. f. 73. Mr 1906; 153-158. f. 14. 
Ap 1916. 
Victorin, M. Aberration in Hepatica acutiloba. Ottawa Nat. 30: 27, 
28. f.z. My 1916. 
Viehover, A., Johns, C. O., & Alsberg, C. L. Cyanogenesis in plants. 
Studies on Tridens flavus (tall red top). Jour. Biol. Chem. 25: 
141-150. My 1916. 
Vries, H. de. The origin by mutation of the endemic plants of Ceylon. 
Science II. 43: 785-787. 2 Je 1916. 
Watson, B. M. The viburnums. Landscape Architecutre 6: 140-144. 
Ap 1916, 
Weir, J. R. Pathological observations on the chestnut in southern 
Indiana. Ann. Rep. Indiana State Board Forestry 1915: 140-163. 
Jf. 20-32. “1915. 
Weir, J. R. Hypoderma deformans, an undescribed needle fungus of 
the western yellow pine. Jour. Agr. Research 6: 277-288. pl. 
3etf. I-4. 22 My 1016. 
Weir, J. R. Mistletoe injury to conifers in the northwest. U. S. 
Dept. Agr. Bull. 360: 1-39. pl. 1-4+f. 1-27. 17 Je 1916. 
Wells, A.E. Fumigation experiments to determine the effect of highly 
diluted sulphur dioxide on a growing grain crop. U.S. Dept. Int. 
Mines Bull. 98: 213-307. pl. 14-25. Jl 1915. 
Wells, B. W. The comparative morphology of the Zoocecidia of 
Celtis occidentalis. Ohio Jour. Sci. 16: 249-290. pl. 12-19. My 
1916. 
Werkenthin, F. C. Fungous flora of Texas soils. Phytopathology 6: 
241-253. Je 1916. 
White, O. E. Variation, environment and the laws of heredity. 
Brooklyn Bot. Gard. Leaflets 49: [1-12]. f. 1-9. 28 Je 1916. 
Williams, R. S. Peruvian mosses. Bull. Torrey Club 43: 323-334. 
pl. 17-20. 29 Je 1916. 
Includes Leptodontium integrifolium, Globulina peruviana, Tortula lacerifolia, 
Grimmia rivulariopsis, Bryum biforme, and Hygrohypnum peruviense, spp. nov. 
