Canada; Dr. B. L. Eobiusou, Gray Herbarium, Cambridge, Mass.; Dr 

 Joliu K. Small, Coluiiibia University; Mr. Stewardsou Brown, of the 

 Academy of Xataral Sciences of Pbiladelpliia; Dr. E. L. Greene, 

 Catholic University; Mr. Theo. Holm, Washington, D. C; Miss Alice 

 Eastwood, Califoruia Academy of Sciences. Thanks are also due Dr. 

 C, H. Merriam and Mr. Veruon Bailey for their kiud assistance in 

 determining the zonal limits of the species. 

 Eespectfnlly, 



F. LA3IS0N SCRIBNER, 



Agrostologist. 

 Hon. James Wilson, 



Secretary of Agriculture. 



