INDEX TO AMERICAN BOTANICAL LITERATURE 281 
Nieuwland, J..A. Critical notes of new and old genera of plants—VII. 
Am. Mid. Nat. 4: 374-378. Mr1916; VIII. Am. Mid. Nat. 4: 379- 
386. Mr 1916. 
Osterhout, G.E. Anew Phacelia from Colorado. Torreya 105° 70,74. 
17 Mr 1916. 
Phacelia denticulata sp. nov. 
Osterhout, W. J. V. The decrease of permeability produced by 
anesthetics. Bot. Gaz. 61: 148-158. f. 1-6. 19 F 1916. 
Pammel, L. H. A comparative study of the weeds of central Iowa, 
northern Minnesota and Wisconsin. Proc. Iowa Acad. Sci. 22: 
57-59. 1915, 
Pammel, L.H. Dr. Charles Edwin Bessey. Proc. Iowa Acad. Sci. 22: 
1i13, 01. Fi 2Qts. 
Pammel, L. H., MacDonald, G. B., & Clark, H. B. The native and 
cultivated forest trees and shrubs of the Missouri river basin. Proc. 
Iowa Acad. Sci. 22: 23-56. pl. 4-15. 1915. 
Peck, M. E. Flora of the east slope of the Cascade Mountains, in 
Crook County, Oregon. Proc. Iowa Acad. Sci. 22: 143-164. 1915. 
Pennell, F. W. Notes on plants of southern United States—I. Bull. 
Torrey Club 43: 93-111. 11 Mr 1916. 
Pool, V. W., & McKay, M. B. Relation of stomatal movement to 
infection by Cercospora beticola. Jour. Agr. Research §: 1011-1038. 
pl. 30,31 +f. 1-6. 28F 1916. 
Rigg, G. B. Physical conditions in Sphagnum bogs. Bot. Gaz. 61: 
159-163, 19 F 1916. 
Sargent, C. S. The name of the red oak. Rhodora 18: 45-48. F 
1916. 
Seaver, F. J. An interesting case of tree girdling. Tree Talk 3: 80, 8. 
Ap 1916. [Illust.] 
Shimek, B. Early Iowa locality records. Proc. Iowa Acad. Sci. 22: 
105-119. 1915. 
Shimek, B, The ecological histology of prairie plants. Proc. lowa 
Acad. Sci. 22: 121-126. pl. 20. 1915. 
Sinnott, E. W., & Bartlett, H. H. Coniferous woods of the Potomac 
formation. Am. Jour. Sci. 41: 276-293. f. r~18. Mr 1916. 
Standley, P. C. The application of the generic name Achyranthes. 
Jour. Washington Acad. Sci. 5: 72-76. 4 F 1915. 
Standley, P. C. The genus Arthrocnemum in North America. Jour. 
Washington Acad. Sci. 4: 398, 399- 19 Au 1914. 
