INDEX TO AMERICAN BOTANICAL LITERATURE 
1920-1924 
The aim of this Index is to include all current botanical literature written by 
Americans, published in America, or — upon American material; the word 
America oe used in the broades 
Reviews, and papers that relate Gere to forestry, agriculture, horti- 
culture, manufactured products: of vegetable origin, | or la ratory methods 
f bacteriology 
An occasional eles is madei in favor of some paper appearing in an Ameri- 
can periodical which is devoted token: tobotany. Reprints are not mentioned 
unless they differ from the nal in some important particular. If users 
of the Index will call the diene of the editor to errors or omissions, their 
kindness will be appreciated. 
This Index is reprinted monthly on cards, and furnished in this form to 
subscribers at the rate of three cents for each card. Selections of cards are 
not permitted; each subscriber must take all cards published during the term 
of his subscription. Correspondence relating to the card issue should be 
addressed to Dr. Fred J. Seaver, N. Y. Botanical Garden, Bronx Park, N. Y. 
City 
Allison, R. V. The effect of aeration upon the development of 
barley in a heavy clay soil. Soil Sci. 17: 97-104. f. 1-2, 
pl. z. F 1924. 
Anderson, E. Studies on self-sterility VI. The genetic basis 
of cross-sterility in Nicotiana. Genetics 9: 13-40. Ja 1924. 
ness = Ee Hymenostomum in North America. Bryologist 
' ta> ta Mir Yo2a. 
Arber, A. Leaves of Trighechin. Bot. Gaz. 77: 50-62. pl. 8- 
Io. 19 Mr 1924 
Arthur, J. C. New species : Uredineae—XV. Bull. Torrey 
Club 51: 51-59. “F’” 12 Mr 1924. 
Including 7 new species and a cueah of new combinations. 
Bachmann, F. M. An unusual growth of mold. Bot. Gaz. 77: 
111-114. f. 1-3. 19 Mr 1924. 
Bailey, I. W. Notes on neotropical ant-plants II]. Cordia 
nedosa Lam. Bot. Gaz. 77: 32-49. pl. 6-7, f. 1-5. 19 Mr 
1924 
361 
