458 INDEX TO AMERICAN BOTANICAL LITERATURE 
Britton, E. G., & Williams, R. S. Bryales. N. Am. FI. 15: 41-43. 
_ 14 Je 1913. 
Britton, N. L., & Brown, A. An illustrated flora of the northeastern 
United States, Canada and the British possessions 1: i-xxix + I- 
680; 2: 1-735; 3: 1-637. New York. 1913. [Ed. 2.] 
Britton, N. L., & icc J. N. The genus Epiphyllum and its allies. 
Contr. U. S. Nat. Herb. 16: 255-262. pl. 78-84. 6 Je 1913. 
Includes Epiphyllum URED E. Nelsonii, E. pumilum, spp. nov.; Eccre- 
mocactus Bradei gen. et sp. , and Strophocactus gen. nov. 
Clute, W. N. A curious nila habitat. Am. Bot. 19: 49,50. My 
1913. [Illust.] 
Clute, W. N. The origin of the Plum Island flora. Am. Bot. 19: 41- 
44. My 1913.  [Illust.] 
Clute, W. N. An ornamental garden plant. Am. Bot. 19: 61, 62. 
My 1913. [Illust.] 
[Clute, W. N.] The slender cliff-brake. Am. Bot. 19: 56, 57. My 
1913. _ [Illust.] 
Clute, W. N. The spider flower. Am. Bot. 19: 53-55. My 1913. 
[Ilust.] 
[Clute, W. N.] Spring flowers of prairie woods. Am. Bot. 19: 58, 59- 
My 1913. [Illust.] 
Copeland, E. B. Notes on some Javan ferns. Philip. Jour. Sci. 8: 
(Bot.) 139-145. pl. 2-4. My 191 
Includes Cyathea proegithat Athyrium pulcherrimum, A. subscabrum, and 
Polypodium javanicum, spp. ni 
Copeland, E. B. On Phollitis in Malaya and the supposed genera 
Diplora and Triphlebia. Philip. Jour. Sci. 8: (Bot.) 147-155. Pl. 
5-7. My 1913. 
Dexter, J. S. Mosquitoes pollinating orchids. Science II. 37: 867- 
6 Je 1913. 
Drennan, G. T. Narcissus biflorus. Am. Bot. 19: 51, 52. My 1913- 
Emerson, R. A. The possible origin of mutations in somatic cells. 
Am. Nat. 47: 375-377-. Je 1913. 
Hansen, J. Mosses of the vicinity of St. John’s University, College- 
ville, Stearns County, Minnesota. Bryologist 16: 42-45. f. I- My 
1913. 
Hasse, H. E. The lichen flora of southern California. Contr. U. S. 
Nat. Herb. 17: 1-132 + vii—xii. 9 Je 1913. 
Heald, F. D. The dissemination of fungi causing disease. Trans. 
Am. Micr. Soc. 32: 5-29. Ja 1913. 
Heald, F. D., & Gardner, M. W. Preliminary note on the relative 
prevalence of pycnospores and ascospores of the chestnut-blight : 
fungus during the winter. Science II. 37: 916, 917- 13 Je i de 
