INDEX TO AMERICAN BOTANICAL LITERATURE 617 
Hubbard, F. T. Nomenclatorial changes required by some Gramineae 
of the seventh edition of Gray’s Manual. Rhodora 14: 165-173. 
23 Au 1912; 14: 184-188. 30S 1912. 
Jensen, C. N. Fungus flora of the soil. Cornell Univ. Agr. Exp. Sta. 
Bull. 315: 415-501. f. 100-134. Je 1912. 
Jones, L. R. Potato diseases in Wisconsin and their control. Univ. 
Wisconsin Agr. Exp. Sta. Circ. 36: 1-10. Je 1912. 
Jones, L. R., Giddings, N. J., & Lutman, B. F. Investigations of the 
potato fungus Phytophthora infestans. U.S. Dept. Agr. Plant Ind. 
Bull. 245: 5-100. pl. 1-10 + f. r-10. 10 Au 1912. 
Kennedy, P. B. Alpine plants—IX. Muhlenbergia 8: 59. f. 6. 31 
My 1912;—X. Muhlenbergia 8: 72. f. 9. 23 Jl 1912;—XI. 
Muhlenbergia 8: 95. f. 14. 30S 1912. 
Kraemer, H. The medullary ray cells in Rhamnus Purshianus. Am. 
Jour. Pharm. 84: 385-388. S 1912. 
Lloyd, F. E. The guayule—a desert rubber plant. Pop. Sci. Mo. 81: 
313-330. f. 1-16. O 1912. 
Long, W. H. Notes on three species of rusts on Andropogon. Phyto- 
pathology 2: 164-171. Au 1912. 
Describes culture experiments with Puccinia Ellisiana Thuem, Uromyces Andro- 
pogonis Tracy, and Puccinia Violae (Schum.) D. C. 
Lundager, A. Some notes concerning the vegetation of Germania Land, 
northeast Greenland. Meddelelser om Grénland 43: 349-414. pl. 
17 +f. 1-18. 1912. 
Lutz, A. M. Triploid mutants in Oenothera. Biol. Centralb. 32: 385- 
435. f. 1-7... 20 Jl 1912. 
Marsh, C. D. Absorption of barium chloride by Aragallus Lamberti. 
Bot. Gaz. §4: 250-252. 21 5S 1972. 
McGeorge, W. Physical and chemical properties of latex of Euphorbia. 
Hawaii Agr. Exp. Sta. Bull. 37: 1-13. 8 Au 1912. 
McLendon, C. A. Mendelian inheritance in cotton hybrids. Bull. 
Georgia Exp. Sta. 99: 143-228. f. 1-20. Au 1912. 
Meinecke, E. P. Parasitism of Phoradendron juniperinum Libocedri 
Engelm. Proc. Soc. Am. Forest. 7: 35-41. pl. 1, 2. Mr 1912. 
Metcalf, H. Diseases of the chestnut and other trees. Trans. Massa- 
chusetts Hort. Soc. 1912: 69-90. I9I2. 
Meyer, R. Echinocactus Monvillei Lem. Monats. Kakteenk. 22: 131, 
$32.° 15 5 19%2. 
Meyer, R. Echinocactus myriostigma S.-D. var. nuda R. Meyer var. 
nov. Monats. Kakteenk. 22: 136,137. 15S 1912. 
Meyer, R. Uber die Gattung Discocactus Pteiff. (Untergattung 
