INDEX TO AMERICAN BOTANICAL LITERATURE 9] 
Haskell, R. J. The spray method of applying concentrated formalde- 
hyde solution in the control of oat smut. Phytopathology 7: 381- 
484. 3 © 19%9. 
Herre, A. C. Preliminary notes on the lichens of Whatcom County, 
Washington. Bryologist 20: 76-84. f. 1. S 1917. 
Herrera, A. L. Estudios de plasmogenia. Bol. Direc. Estud. Biol. 
Mexico 2: 29-45. 1917. [Illust.] 
Hines, C. W. A study of the root system of the sugar cane and its 
application to the production of ratoon crops. Philip. Agr. Rev. 10: 
ERT“ 161.. f..2-6.<: 4917. 
{Hitchcock, A. S.] Botanical explorations in the Hawaiian Islands. 
Smithsonian Misc. Coll. 66": 59-73. f. 61-77. 1917. 
Hofmann, J. V. Natural reproduction from seed stored in the forest 
floor. Jour. Agr. Research 11: 1-26. pl. 1-7 + f. 1-4. 1 O 1917. 
Hooker, ‘H. D., Jr. Mechanics of movement in Drosera rotundifolia. 
Bull. Torrey Club 44: 389-403. 10 Au 1917. 
Hotson, J. W. Notes on bulbiferous fungi with a key to described 
species. Bot. Gaz. 64: 265-284. pl. 21-23 +f. 1-6. 16 O 1917. 
Papulospora pallidula, P. byssina, P. aurantiaca, P. nigra, and P. magnifica, 
_ 8pp-. nov., are described. : 
House, H. D. The Peck testimonial exhibit of mushroom models. 
Mycologia 9: 313, 314. 24S 1917. 
Also published in Torreya 17: 178-180. O 1917. 
Jackson, H.S. Two new forest tree rusts from the northwest. Phyto- 
pathology 7: 352-355. 3 O 1917. 
Chrysomyxa Weirii and Melampsora occidentalis. 
Jehle, R. A. Susceptibility of non-citrus plants to Bacterium Citri. 
Phytopathology 7: 339-344. f. I-3. 3 O 1917. 
Jones, D. F. Linkage in Lycopersicum. Am. Nat. 51: 607-621. O 
1917. 
Jones, L. R. Soil temperature as a factor in Phytopathology. Plant 
World 20: 229-237. Au 1917. 
Kraebel, C. J. Choosing the best tree seeds. Jour. Heredity 8: 483- 
492. f. 1-5 + frontispiece. N 1917. 
The influence of paternal character and environment upon progeny of Douglas 
fir. 
Levin, E. Control of lettuce rot. Phytopathology 7: 392, 393- 
1917. 
Lioyd, C. G. The Geoglossaceae (viz., the genus Geoglossum and 
related genera). 1-24. f. 782-807. My 1916. 
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