INDEX TO AMERICAN BOTANICAL LITERATURE 221 
Johnson, J. The relation of air temperature to the mosaic 
disease of potatoes and other plants. Phytopathology 12: 
438-441. f. r. 17 O 1922. 
Johnston, E. S. Moisture content of peach buds in relation to 
temperature evaluations. Bot. Gaz. 74: 314-319. f. I, 2. 
23 N 1922. 
Johnston, I. M. Undescribed plants from Baja California. 
Univ. California Publ. Bot. 7: 437-446. 7 Au 1922. 
Contains new species in Ephedra (1), Stenophyllus (1), Euphorbia (3), 
Securinega (1), Cryptantha (1), and Houstonia (1). 
Jones, D. F. Selective fertilization and the rate of pollen-tube 
growth. Biol. Bull. 43: 167-174. f. 1, 2. S 1922. 
Jones, L. R., McKinney H. H., & Fellows, H. The influence of 
soil temperature on potato scab. Agr. Exp. Sta. Univ. 
Wisconsin Bull. 53: 1-35. pl. 1-5 +f. 1-9. Jl 1922. 
Jones, L. R., & Tisdale, W. B. The influence of soil temperature 
upon the development of flax wilt. Phytopathology 12: 
409-413. f. z. 17 O 1922. 
Jurica, H.S. A morphological study of the Umbelliferae. Bot. 
Gaz. 74: 292-307. pl. 13, 14. 23 N 1922. 
Karper, R. E. Compound fruits in the peach resulting from 
multiple pistils. Jour. Hered. 12: 403-406. f. Q-II. 15 
Ap 1922. 
Kauffman, C. H., & Kerber, H. M. A study of the white 
heart-rot of locust, caused by Trametes robiniophila. Am. 
Jour. 9: Bot. 493-508. f. 1-3. 27 N 1922. 
Kelley, A. P. Plant indicators of soil types. Soil Sci. 13: 411- 
423. Je 1922. 
Kempton, J. H. Linkage between brachysm and adherence in 
maize. Am. Nat. 56: 461-464. O 1922. 
Kempton, J. H. Waxy endosperm in Cotx and Sorghum. 
Jour. Hered. 12: 396-400. f. 6. 15 Ap 1922. 
Kennard, F. H. Moulds and bacteria on egg collections. 
Auk 38: 345-356. Jl 1921. 
