596 INDEX TO AMERICAN BOTANICAL LITERATURE 
Lipman, C. B. Plant ecology and the new soil fertility. Mem. N. Y. 
Bot. Gard. 6: 319-321. 31 Au 1916. 
Lioyd, F. E. The embryo-sac and pollen grain as colloidal systems. 
Mem. N. Y. Bot. Gard. 6: 561-563. 31 Au 1916. 
Lofgren, A. O genero Rhipsalis. 1-48. Rio de Janeiro. 1915. : 
Includes Rhipsalis pulchra, R. rigida, R. chrysocarpa, R. chrysantha, spp. nov. 
MacDougal, D. T. The mechanism and conditions of growth. Mem. 
N. Y. Bot. Gard. 6: 5-26. pl. 1 +f. 1g. 31 Au 1916. 
MacCaughey, V. Vegetation of the Hawaiian summit bogs. Am. 
Bot. 22: 45-52. My 1916. 
McAtee, W. L. The winter flora of M uskeget Island, Massachusetts. 
Rhodora 18: 93-99. 4 My 10916. 
McCubbin, W. A. The white pine blister rust in Canada. Ann. Rept. 
Quebec Soc. for Protection of Plants from Insect and Fungous 
Diseases 8: 64-72. 1916. [Illust.] 
Mains, E. B. The wintering of Coleosporium solidaginis. Phyto- 
pathology 6: 371, 372. 12 S 1916 
Maublanc, A., & Rangel, E. Alguns fungos do Brazil. Novos ou mal 
conhecidos. A Lavoura 18: 19-32, bl. 4-9. Ap 1914. 
Includes eight new species of Pyrenomycetes, twenty-five new species and two 
new genera of the Fungi Imperfecti, 
Mattoon, W. R. Short-leaf pine; its economic importance and forest 
management. U.S. Dept. Agr. Bull. 308: 1-66. pl. 1-10. 22 N 
I9t5. 
Melchers, L. E. Smuts of grain and forage crops in Kansas. Kansas 
Agr. Exp. Sta. Bull. 210: 1-38. f. I-20. Ja 1916. 
Melhus, I. E. Hibernation of Phytophthora infestans of the Irish 
potato. Jour. Agr. Research gs: 71-102. pl. 4-8 +f. 1-3. 119 
1915. 
Melhus, I. E. Perennial mycelium in species of Peronosporaceae 
related to Phytophthora infestans. Jour. Agr. Research 5: 59-79: 
ol. 3+f.7. 110 I9i5. 
Merrill, E. D. Studies on Philippine Anonaceae,—J. Philip. Jour: 
Sci. 10: (Bot.) 227-264. Jl t915. 
Includes descriptions of twenty-five new species. 
Murrill, W. A. Illustrations of fungi—XXV. Mycologia 8: 231-234 
bl. 190. 14S 1916, 
Venenarius solitarius, V. glabriceps, V. phalloides, Vaginata albocreata, and 
Lepiota aspera are illustrated in color. 
