INDEX TO AMERICAN BOTANICAL LITERATURE 451 
Howard, B. J. Decomposition and its microscopical detection in 
some food products. Yearbook U. S. Dept. Agr. 1911: 297-308. 
pl. T5-19. 1912. 
Contains information relating to certain molds and bacteria. 
Humphreys, E. W. Some very old figs. Guide to Nature 4: 302. 
f. 1-4. Ja 1912. 
Hutchinson, J. Sapium cladogyne, a new species from British Guiana. 
Kew Bull. Misc. Inf. 1912: 223, 224. Je 1912. 
Johnston, E. C. Brief notes on the kelps of Alaska. 62d Congress, 
2d Session, Sen. Doc. 190: 214-216. 1912. 
Jostmann, A. Die Rebutsche Sammlung. Monats. Kakteenk. 22: 
85, 86. 15 Je 1912. 
Kearney, T. H., & Shantz, H. L. The water economy of dry-land 
crops. Yearbook U.S. Dept. Agr. 1911: 351-362. 1912. 
Kent, E.C. The measles fern. Bull. Vermont Bot. Club 7: 20, My 
1912. 
Kirk,G.L. Rutland County flora. Bull. Vermont Bot. Club 7: 14, 15. 
My 1912. 
Krause, K. Zwei neue Phoradendron aus Costa Rica. Notizbl. 
K6nigl. Bot. Gart. Berlin 6: 264, 265. 27 Je 1912. 
Phoradendron quinquenervium, and P. Biolleyi spp. nov. 
Lorenz, A. Vegetative reproduction in the New England Frullaniae. 
Bull. Torrey Club 39: 279-284. f. 1-3. 10 Jl 1912. 
McFarland, F. M. The kelps of the central Californian coast. 62d 
Congress, 2d Session, Sen. Doc. 190: 194-208. 1912. 
Mackensen, B. Three new species of Opuntia, with a discussion of the 
identity of Opuntia Lindheimeri. Bull. Torrey Club 39: 289-292. 
10 Jl 1912. 
Includes Opuntia convexa, O. reflexa, and O. Griffithsiana spp. nov. 
¢Murran,S.M. A new internal Sterigmatocystis rot of pomegranates. - 
Phytopathology 2: 32%, 126. fe. 19:2. 
Matthew, G.F. Were there climatic zones in Devonian time? Trans. 
Roy. Soc. Canada III. §: 125-153. 1912. 
Meyer, R. Kleine Mitteilungen und Fingerzeige. Monats. Kakteenk. 
22: 94. 15 Je 1912. 
Note on Echinopsis Bridgesii S.-D. 
er, G. S., & Standley, P. C. The North American species of 
Nymphaea. Contr. U. S. Nat. Herb. 16: 63-108. pl. 35-47 + f. 2- 
40. 6 Jl 1912. 
Includes 8 new species; and an introductory note by J. N. Rose. 
Ontgomery, E.G. Competition in cereals. Nebraska Agr. Exp. Sta. 
Bull. 127: 3-22. f. r-7. 8 My 1912. 
