﻿Index to American botanical literature 361 



Frothingham, E. H. The eastern hemlock {Tsuga canadensis (Linn.) 



Carr). U. S. Dept. Agr. Bull. 152: 1-43. pL 1-5 +f. 1-3. 3 F 1915. 



Gates, F. C. A woody stem in Merremia gemella induced by high warm 



Gates, R. R. On the nature of mutations. Jour. Heredity 6: 99-108. 



/. i~7- 25 F 1915. 

 Gonnley, R. Onagraceae of Ohio. Ohio Xat. 15: 463-468. 12 Mr 



Greenman, J. M. Descriptions of North American Senecioneae. Ann. 

 Missouri Bot. Gard. i: 263-290. pi. 10-14. 30 S 1914. 



Griffiths, D. Hardier spineless cactus. Jour. Heredity 6: 182-191. 

 /. is-ig. 25 Mr 191 5. 



Harter, L. L. Notes on the distribution and prevalence of three im- 

 portant sweet potato diseases. Phytopathology 5: 124-126. Ap 



Hasselbring, H. Effectos de la sombra sobre la transpiraci6n y la 

 asimilacion de la planta del tabaco en Cuba. Cuba Estac. Exp. 

 Agron. Bull. 24: 1-38. F 1915. 



Hasselbring, H. Tipos de tabaco cubano. Cuba Estac. Exp. Agron. 

 Bull. 33: 1-15. pi. 1-7. Ja 1915- 



Hasse, H. E. Additions to the lichen-flora of southern California. 

 No. 10. Bryologist 18: 22, 23. Mr 1915. 



Hawkins, L. A. Some effects of the brown-rot fungus upon the com- 

 position of the peach. Am. Jour. Bot. 2: 71-81. F 1915. 



Haynes, C. C. Hepaticae collected in Florida by Severin Rapp. 

 Bryologist 18: 19-22. Mr 1915. 



Heald, F. D., Gardner, M. W., & Studhalter, R. A. Air and wind 

 dissemination of asco[s]pores of the chestnut-blight fungus. Jour. 

 Agr. Research 3: 493-526. pi. 63-63 -hf. i, 2. 25 Mr 1915. 



Holden, R. On the relation between Cycadites and Pseudocycas. 

 New Phytologist 13: 334-340- pl- 3+f- i- D 1914. 



Jensen, J. Dendrologische Beobachtungen in dem Gebiete am Kopfe 

 des Michigansees. Mitteil. Deuts. Dend. Gesells. 1914: 184-188. 

 23 N 1914. 



Jones, L. R., & Gilbert, W. W. Lightning injury to potato and cotton 

 plants. Phytopathology 5: 94-102. pi. 8, 9. Ap 1915. 



Lipman, C. B. A suggestion of a new phase of the problem of physio- 

 logical diseases of plants. Phytopathology 5: Iii-n6. Ap 1915. 



