

CONTRIBUTIONS FROM 



THE OSBORN BOTANICAL LABORATORY 



YALE UNIVERSITY 



1917 



1. Evans, A. W. Notes on North American Hepaticae. VII. 



Bryologist 20: 17-28. pi 1. March, 1917. 



2. Evans, A. W, The American species of Marchantia. 



Trans. Connecticut Acad. 21: 201-313. /. 1-20. 

 March, 1917. 



3. Evans, A. W. Notes on the genus Herberta, with a revision 



of species known from Europe, Canada and the United 

 States. Bull. Torrey Club 44: 191-222. pi 8 ] /. 1-29. 

 April, 1917. 



4. Evans, A. W. Preliminary list of Arizona Hepaticae. 



Bryologist 20: 60-62. July, 1917. 



5. Hooker, H. D., Jr. Mechanics of movement in Drosera 



rotundifolia. Bull. Torrey Club 44:389-403. August, 1917. 



6. Hooker, H. D., Jr. Liebig's Law of the Minimum in 



relation to general biological problems. Science, II, 46: 

 197-204. /. 1-2. August, 1917. 



7. Nichols, G. E. The interpretation and application of 



certain terms and concepts in the ecological classification 

 of plant communities. Plant World 20: 305-319, 341-353. 

 October and November, 1917. 



