399] FLORA OF COLUMBIA AND VICINITY 257 



Millspaugh, C. F. and Nuttall, L. W. Flora of West 

 Virginia. Field Columbian Museum, Pub., Bot. ser. I, 69-276. 

 1S96. 



Mohr, Charles. Plant life of Alabama. U. S. Nat'l 

 Herb.,Contr. 7, igoo. 



Nelson, Aven. First report on the flora of Wyoming. 

 Wy. Agr. E.x. Sta., Bull. 28, 1896. 



Pammel, L. H. Notes on the flora of western Iowa, 

 la. Acad, of Sci., Proc. 3, 106-135, 1896. 



Pammel, L. H. Some weeds of Iowa. la. Agr. Ex. 

 Sta., Bull. 70, 1903. 



Pammel, L. H. and King, Charlotte M. The vascular 

 ciyptogams of Iowa and the adjoining parts of southeastern 

 Minnesota and western Wisconsin. la. Acad, of Sci., Proc. 



9, 134-151. 1902. 



Selby, A. D. and Duvel, J. W. T. Sources of the Ohio 

 flora. Journ. Columbus Hort. Soc, 35-58, 1899. 



Shimek, B. The flora of the Sioux quartzite in Iowa, 

 la. Acad, of Sci., Proc. 2, 72-77, 1895; 5, 28-31, 1898. 



Torrey, John. Flora of the state of New York. Nat. 

 Hist, of N. Y., part 2, 1-2, 1843. 



Watson, Sereno, and others. Botany of California. 

 Cal. Geol. Surv, Bot. 1-2, 1880. 



