INDEX TO AMERICAN BOTANICAL LITERATURE 459 
Howe, R. H. Lichens of Mount Katahdin, Maine. Bryologist 16: 
33-36. My 1913. 
Hedrick, U. P. A striking correlation in the peach. Science II. 37: 
917, 918. 13 Je 1913. 
Hubbard, F. T. On Eragrostis cilianensis (All.) Vignolo Lutati. 
Philip. Jour. Sci. 8: (Bot.) 159-161. My 1913. 
Hull, E. D. Notes on the fern flora of Michigan. Am. Bot. 19: 48. 
My 1913. 
Jordan, W. H. Studies in plant nutrition. II. N. Y. Agr. Exp. Sta. 
Bull. 360: 53-77. f. 1-8. F 1913. 
Kaiser, G. B. Slime mould growing on a moss. Bryologist 16: 45. 
My 1913. 
Keith, S. C. Factors influencing the survival of bacteria at tempera- 
tures in the vicinity of the freezing point of water. Science II. 
37: 877-879. 6 Je 1913. 
Merrill, G.K. Florida lichens. Bryologist 16: 39-41. f.z. My 1913. 
Millspaugh, C. F. The living flora of West Virginia. West Virginia 
Geol. Surv. 5 (A): 1-389, 454-486. 1913. [IIlust.] 
McDermott, F. A. A tetracarpellary walnut. Torreya 13: 137-139. 
f. I. 9 Je 1913. 
Maza, M. G. de la. Determinacion de plantas Cubanas. Fanero- 
gamas. 1-58-+ 1-4. Habana. 1913. 
Merrill, G. K. Lichens from Java. Torreya 13: 133-137. 9 Je 1913. 
Nelson, A., & Macbride, J. F. Western plant studies. I. Bot. Gaz. 
55: 372-383. 15 My 1913 
Includes 12 new species in pte Te (1), Clematis (1), Delphinium (1), Horkelia 
(1), Astragalus (1), Nemophila (1), Phacelia (1), Oreocarya (1), Castilleja (2), 
Pentstemon (1), and Erigeron (1). 
Nieuwland, J. A. Abnormal fruits of Juglans regia. Am. Bot. 19: 
59, 60. My 1913. 
Northrup, Z. The influence of certain acid-destroying yeasts upon lactic 
bacteria. Centralb. Bakt. Zweite Abt. 37: 459-490. 22 My 1913. 
Prescott, A. Goldie’s shield fern. Am. Bot. 19: 63s 64. . My 1913. 
Nephrodium Goldieanum. 
Quehl, L. Mamillaria dolichocentra Lem. und ihre Verwandten. 
Monats. Kakteenk. 23: 69, 70. 15 My 1913. 
Purpus, J. A. Ariocarpus trigonus K. Schum. Monats. Kakteenk. 
23: 65-69. 15 My 1913. [Illust.] 
Robinson, W. J. A taxonomic study of the Pteridophyta of the 
Hawaiian Islands. III. Bull. Torrey Club 40: 193-228. pl. 9-12 
+ f.z. 20 My 1913. 
Includes — of Polypodium pumilum, a kauaiense, and A, 
glabratum, spp. n 
