INDEX TO AMERICAN BOTANICAL LITERATURE 391 
Oakley, R. A. Orchard grass. U.S. Dept. Agric. Plant Ind. Bull. 1oos: 
45-56. pl. 7. 25 Ap 1907. 
Dactylis glomerata. 
Orton, W.A. Plant diseases in the United States in 1901. Yearbook U.S. 
Dept. Agric. 1901: 668-672. 1902. 
Orton, W.A. Plant diseases in the United States in 1902. Yearbook U.S. 
Dept. Agric. 1902: 714-719. 1903. 
Orton, W. A. Plant diseases in 1903. Yearbook U.S. Dept. Agric. 1903: 
550-555- 1904. 
Orton, W. A. Plant diseases in 1904. Yearbook U.S. Dept. Agric. 1904: 
581-586. 1905. 
Orton, W. A., & Ames, A. Plant diseases in 1907. Yearbook U. S. Dept. 
Agric. 1907: 577-589. 1908. 
Orton, W. A., & Ames, A. Plant diseases in 1908. Yearbook U. S. Dept. 
Agric. 1908: 533-538. 1909. 
Osterhout, W. J. V. The living plant. California Agric. Exp. Sta. 
Nature-study Bull. 41-64. f. 1-21. S 1900. 
Palla, E. Neue Cyperaceen—V. Oesterr. Bot. Zeits. 59: 186-194. pl. 3. 
My 1909. 
Pammel, L. H. Flora of northern Iowa peat bogs. Rep. Iowa Geoh. 
Survey 19: 737-787. f. 106-117. [1909.] 
Piche, G. C. Liste des principaux arbres et arbrisseaux indigénes ou 
naturalisés de la province de Québec. 1-8. Montreal, 1908(?). 
Piper,C.V. The search for new leguminous forage crops. Yearbook U.S. 
Dept. Agric. 1908: 245-260. pl. Q-I5. 1909. 
Pohlmann, R., & Reiche, K. Beitrage zur Kenntniss der Flussthaler 
Camerones und Vitor und ihres Zwischenlandes (19° s. Br.). | Verh. 
Deuts. Wiss. Vereins Santiago 14: 263-305. 1900. 
Radlkofer, L. Uber die Gattung Allophylus und die Ordnung ihrer Arten. 
Sitzungsber. Kgl. Bayer. Akad. Wiss. math.-phys. KI. 38: 201-240. 1909. 
Ragan, W.H. Nomenclature of the pear; a catalogue-index of the known 
varieties referred to in American publications from 1804-1907. U. S. 
Dept. Agric. Plant Ind. Bull. 126: 1-268. 30 Je 1908. 
Sapper, C. Ueber die geologische Bedeutung der tropischen Vegetations- 
formationen in Mittelamerica und Sudmexico. 1-38. Leipzig, 1900. 
Schumann, K. Bliihende Kakteen (Iconographia Cactacearum) 1: pl. 1-4. 
[16 O 1900]; 2: pl. 5-8. [25 N 1900.] 
Scofield, C. S. The botanical history and classification of alfalfa. U. S. 
Dept. Agric. Plant Ind. Bull. 131°: 13-19. f. z, 2.. 17 Au 1908. 
