INDEX TO AMERICAN BOTANICAL LITERATURE 73 
Harrington, J. B., & Aamodt,O.S. The mode of inheritance of 
resistance to Puccinia graminis with relation to seed color 
in crosses between varieties of durum wheat. Jour. Agr. 
Research 24: 979-996. pl. I-4g. 23 Je 1923. 
Harter, L.L.,& Weimer, J.L. Influence of the substrate and its 
hydrogen-ion concentration on pectinase production. Jour. 
Agr. Research 24: 861-878. 9 Je 1923. 
Harter, L. L., & Weimer, J. L. The relation of the enzym 
pectinase to infection of sweet potatoes by Rhizopus. Am. 
Jour. Bot. 10: 245-258. 10 My 1923. 
Hayes, H. K., & Aamodt, O.S. A study of rust resistance in a 
cross between Marquis and Kota wheats. Jour. Agr. 
Research 24: 997-1012. pl. 1-3. 23 Je 1923. 
Hemmi, T. On the relation of temperature to the damping-off 
of garden-cress seedlings by Pythium Debaryanum and 
Corticium vagum. Phytopathology 13: 273-282. f. 1, 2. 
7 Je 1923. 
Hendricks, H. V. Torsion studies in twining plants. Bot. 
Gaz. 75: 282-297. f. I-10. 19 My 1923. 
Hitchcock, A.S. Dissanthelium, an American genus of grasses. 
Jour. Washington Acad. Sci. 13: 223-225. 4 Je 1923. 
Hitchcock, R. Tolypella longicoma in Cayuga Lake, N{few] 
Y[ork]. Bull. Torrey Club 50: 173-176. pl. 8. 25 My 1923. 
Hoskins, J. H. A Palaeozoic Angiosperm from an American 
coal ball. Bot. Gaz. 75: 390-399. pl. 17 +f.1-7. 25 Je 
1923. 
Angiospermophyton, gen. nov. 
House, H. D. Notes on Fungi. New York State Mus. Bull. 
243: 80-97. Je 1923. 
House, H.D. Local flora notes VIII. New York State Mus. 
Bull. 243: 13-57. Je 1923. ; 
House, H. D. Nomenclatorial notes regarding certain New 
York state plants. New York State Mus. Bull. 243: 58- 
69. je 1923: 
