70 INDEX TO AMERICAN BoTANICAL LITERATURE 
Hopkins, A.D. The bioclimatic law. Jour. Washington Acad. 
Sci. 10: 34-40 19 Ja 1920. 
Howe, M. A. A little-known mangrove of Panama. Jour. 
New York Bot. Gard. 12: 61-72. f. 16-23. Ap I9gI11. 
Jamieson, C. O., & Wollenweber, H. W. An external dry rot 
of potato tubers caused by Fusarium trichothecioides, 
Wollenb. Jour. Washington Acad. Sci. 2: 146-152. f. I. 
19 Mr 1912. 
Jennings, O. E. New or noteworthy plants from northwestern 
Ontario. I. Jour. Washington Acad. Sci. 10: 453-460. 4 
O 1920. 
ncludes new species and varieties in Lysias (1), Kneiffia (1), Pyrola 
(3), Scutellaria (1), Stachys (3). 
Kearney, T. H. Plant life on saline soils. Jour. Washington 
| Acad. Sci. 8: 109-125. 4 Mr 1918. 
Kellerman, K. F. The effect of salts of boron upon the distri- 
bution of desert vegetation. Jour. Washington Acad. Sci. 
10: 481-486. 19 O 1920. 
Kellerman, M. Phototypes, a means for wide distribution of | 
type material. Jour. Washington Acad. Sci. 2: 346-348. 
19 Au I9gI2. 
Kempton, J. H. The ancestry of maize. Jour. Washington 
Acad. Sci. 9: 3-11.. 4 Ja 19109. 
Kempton, J. H. A correlation between endosperm color and 
albinism in maize. Jour. Washington Acad. Sci. 7: 146- 
149. 19 Mr 1917. 
Kempton, J. H. Linkage between brachytic culms and peri- 
carp and cob color in maize. Jour. Washington Acad. Sci. 
11: 13-20. 4 Ja 1921. 
Knowlton, F. H. A catalogue of the Mesozoic and Cenozoic 
plants of North America. U.S. Geol. Surv. Bull. 696: I- 
815. 1919. 
Knowlton, F. H. Cretaceous-Tertiary boundary in the Rocky 
Mountain region. Bull. Geol. Soc. Amer. 25: 325-340. 
15 S 1914. 
Knowlton, F. H. Description of a supposed new fossil species 
of maize from Peru. Jour. Washington Acad. Sci. 9: 134- 
136. 4 Mr Io1g. 
