542 INDEX TO AMERICAN BOTANICAL LITERATURE 
Hartwell,B. L. Starch congestion accompanying certain factors which 
retard plant growth. Rhode Island Agr. Exp. Sta. Bull. 165: 
3-23. My 1916. 
Hawkins, L. A. The disease of potatoes known as “leak.” Jour. Agr. 
Research 6: 627-640. pl. 90 + f. 1. 24 Jl 1916. 
Hervey, E. W. Variants of Aster Herveyi. Rhodora 18: 183, 184. 
3 Au 1916. 
Hicken, C. M. Plantae Fischerianae. Contribucién al conocimiento 
de la flora del Rio Negro. Physis 2: 1-18. 10 N 1915; 101-122. 
12 F 1916. 
Includes Gallardoa Fischeri gen. et sp. nov. and Setaria villiglumis, Polygala 
Rosei, Croton? malpighi pilus, and Frankenia Fischeri, spp. nov 
Hoffstadt, R. E. The vascular anatomy of Piper methysticum. Bot- 
Gaz. 62: 115-132. f. 1-23. -15 Au 1916. 
Jacobson, H. O. Correlative characters of the rice plant. Philip. 
Agr. Rev. 9: 74-119. 1916. 
Knowlton, C. H., & Deane, W. Reports on the flora of the Boston 
district—X XIII. Rhodora 18: 165-168. Jl 1916. 
Levin, E. The leaf-spot disease of tomato. Michigan Agr. Exp. Sta. 
Tech. Bull. 25: 1-51. pl. 1-9 eT Je dy 2° Mr 1986. 
Lloyd, C.G. Mycological notes. 42: 572-588. f. 808-829. Je 1916. 
Loeb, J. On the association and possible identity of root-forming and 
geotropic substances or hormones in AE Sr doen calycinum. 
’ Science II. 44: 210, 211. 11 Au 1916. 
Long, B. Delphinium Consolida in America, with a consideration of the 
status of Delphinium Ajacis. Rhodora 18: 169-177. 3 Au 1916. 
Macbride, J. F. Vegetative succession under irrigation. Jour. Agr. 
Research 6: 741-760. bl. 98-105. 7 Au 1916. 
Mackenzie, K. K. Notes on Carex—X. Bull. Torrey Club 43: 423- 
434. 22 Au 1916. 
Includes Carex convoluta sp. nov. 
McDougal, W.B. The growth of forest tree roots. a Jour. Bot. 3: 
384-392. Au 1916. 
‘Merrill, E. D. Notes on the flora of Borneo. Philip. Jour. Sci. 11: 
(Bot.) 49-100. Mr 1916. 
Includes descriptions of forty-eight new species and the new genus Moulton- 
tanthus. 
