96 BULLETIlSr 7G0, U. S. DEPAKTMEFT OF AGKICT7LTURE. 



pressure on tlie mounting plaster in mounting will be found superior 

 to tlie unaided fingers. Flowers or otlier parts essential to identifi- 

 cation should not be hidden by the mounting plaster. 



Small loose material, such as fruits, seeds, and Igaves, which may 

 be needed for further study, should be inclosed in a small envelope 

 in such a way as to be conveniently opened, in some comer of the 

 mounting sheet. 



Plant specimens for Washington should not be mounted. 



ADDITIONAL REFERENCES USEFUL IN NATIONAL FOREST 

 RANGE PLANT STUDIES. (ARRANGED CHRONOLOGICALLY.) 



I. TAXONOMIC. 



Watson, S. (and others). Botany (of the Kmg Expedition). Report of the 

 U. S. Geological Exploration of the Fortieth Parallel, vol. 5, Professional 

 Papers of the Engineer Department, U. S. Army, IS, 1871. 



Brewer, W. H., Watson, S., and Gray, A. Botany (of Calif oi*nia ) , Geological 

 Survey of California, a-o1. 1-2. Cambridge, ]Mass., University Press, 1876-80. 



Eothrock, J. T. (and others). Botany (of the Wheeler Survey). Report upon 

 U. S. Geographical Surveys West of the lOOth Meridian, vol. 6, Engineer De- 

 partment, TJ. S. Army, 1878. 



Coulter, J. M. Botany of Western Texas. Contributions from the V. &. National 

 Herbarium, vol. 2, lS91-i. 



Rydberg, P. A. Catalogue of the Flora of Montana and the Yellowstone Na- 

 tional Park. New York Botanical Garden, Memoirs, vol. 1, 1900. 



Piper, C. V. Flora of the State of Washington. Contributions from the U. S. 

 National Herbarium, vol. 11, 1906. 



Rvdberg, P. A. Flora of Colorado. Colorado Agricultural Experiment Station, 

 Bulletin 100, 1906. 



Wooton, E. O., and Standley, P. C. Flora of New Mexico. Contributions from 

 the U. S. National Herbarium, a-oI. 19, 191.5. 



Sampson, Arthur W. Important Range Plants. U. S. Department of Agricul- 

 ture, Bulletin 545, 1917. 



II. ECONOMIC. 



Nealley, G. C, and Tracy, S. M. Grasses of the Arid Districts. U. S. Division 



of Botany, Bulletin 6, 1888. 

 Tasey, G. The Agricultural Grasses and Forage Plants of the United States. 



U. S. Division of Botany, Special Bulletin, 1889. 

 Pammel, L. H. Notes on the Grasses and Forage Plants of Iowa, Nebraska, 



and Colorado. U. S. Division of Agrostology, Bulletin 9, 1897. 

 Williams, T. A. A Report upon the Grasses and Forage Plants and Forage 



Conditions of the Eastern Rocky Mountain Region. U. S. Division of 



Agrostology, Bulletin 12, 1898. 

 Nelson, A. The Red Desert of Wyoming and Its Forage Resources. U. S. 



Division of Agrostology, Bulletin 13, 1898. 

 Smith, J. G. Fodder and Forage Plants, Exclusive of the Grasses. U. S. 



Division of Agrostology, Bulletin 2, 1900, rev. ed. 

 Kennedy, P. B., and Doten, S. B. A Preliminary Repoit on the Summer 



Ranges of Western Nevada Sheep. Nevada Agricultural Experiment Station, 



Bulletin 51, 1901. 

 Spragg, F. A. Forage Conditions of Central Montana. Montana Agricultural 



Experiment Statioii, Bulletin 36, 1902. 

 Griffiths, D. Forage Conditions and I'roblems in Eastern Wa.shington, Eastern 



Oregon, Northeastern California, and Northeastern Nevada. U. S. Bureau 



of Plant Industry, Bulletin 38, 1903. 

 Mackie, W. W. The Value of Oak Leaves for Forage. California Agricultural 



Experiment Station, Bulletin 1.50, 1903. 

 Griffiths, D. Range Investigations in Arizona. U. S. Bureau of I'lant In- 

 dustry, Bulletin 67, 1904. 

 U. S. Forest Service, Office of Grazing Studies. Notes on National Forest 



Range Plants, Part I, Grasses, 1914. 

 Wooton, E. O. Factors Affecting Range Management in New Mexico. U. S. 



Department of Agriculture, Bulletin 211, 1915. 



