206 INDEX TO AMERICAN BOTANICAL LITERATURE 
Claassen, E. Plants recognized on a dumping ground at the foot of 
Ninth Street, Cleveland, Ohio. Ohio Nat. 12: 475, 476. 16 F 1912. 
Clark, H. L. Biotypes and phylogeny. Am. Nat. 46: 139-150. F 
1912. 
Cockerell, T. D.A. Fossil flowers and fruits—II. Torreya 12: 32, 33. 
tS Shae $e Que he 
Robinia mesozoica sp. nov. described. 
Conklin, E.G. Problems of evolution and present methods of attacking 
them. Am. Nat. 46: 121-128. Mr 1912. 
Davenport, C. B. Light thrown by the experimental study of heredity 
upon the factors and methods of evolution. Am. Nat. 46: 129-138. 
F 1912. 
Davidson, A. Botanizing in Ingo County. Bull. S. Calif. Acad. Sci. 
II: 15-17. Ja 1912. 
Dobbin, F. Evergreens in winter. Am. Bot. 18: 7-9. F 1912 
Eastham, J. W. The Myxomycetes or slime-moulds of the Ottawa dis- 
trict; a preliminary list. Ottawa Nat. 25: 157-163. 12 F 1912. 
Eichlam, F. Mitteilungen aus Zentral-Amerika. Monats. Kakteenk. 
22: 4-11. 15 Ja I912. 
Elmer, A. D. E, Additional species of Elaeocarpus. Leaflets Philip. 
Bot. 4: 1171-1190. 15 N abe 
Includes descriptions of 14 new spec 
Elmer, A. D. E. New sdk ctihaceni Leaflets Philip. Bot. 4: 119I~ 
1230. 29 N I1g1I. 
Includes 38 new species in Creochiton (1), Dissochaeta (1), Melastoma (1), M 
mecylon (6), Astronia (6), and Medinilla (23). 
Fernald, M. L., & Wiegand, K. M. A new variety of Juncus balticus. 
Rhodora 14: 35, 36. 1 F 1912. 
Fox, C. P. Another Ohio grown rubber. Ohio Nat. 12: 469-470. 16 
F 1912. 
Fullmer, E. L. Additions made to the Cedar Point flora during the 
summer of 1911. Ohio Nat. 12: 473. 16 F 1912. 
Fullmer, E.L. A preliminary list of the Myxomycetes of Cedar Point. 
Ohio Nat. 12: 472. 16 F 1912. 
Gordon, M. Ray tracheids in Sequoia sempervirens. New Phytol. 12° 
1-7. f. 1-7. Ja 1912. 
Griffiths, D. The grama grasses: Bouteloua and related genera. 
Contr. U. S. Nat. Herb. 14: 343-428 + i-xi. pl. 67-83 +f. 17 
63. 24 F 1912. 
Includes Bouteloua Sonorae and B. eludens spp. nov 
Griggs, R.F. The development and cytology at Rhodochytrium. 
Gaz. 53: 127-173. pl. 11-16. 20 F 1912. 
Bot. 
