INDEX TO AMERICAN BOTANICAL LITERATURE 
1917-1921 
The aim of this Index is to include all current botanical literature written by 
Americans, published in America, or based upon American material ; the word Amer- 
ica being used in the broadest s 
Reviews, and papers that ais exclusively to forestry, agriculture, arpa 
manufactured products of vegetable origin, or laboratory methods are not included, and 
no attempt is made to index the literature of bacteriology. An occasional ee is 
made in favor of some paper appearing in an American periodical which is devoted 
wholly to botany. Reprints are not mentioned unless they differ from the original in 
Some important particular. If users of the Index will call the attention of the editor 
to errors or omissions, their kindness will be appreciated. 
This Index is reprinted monthly on cards, and Some in this form to sub- 
scribers at the rate of three cents for each card. Selection of cards is not permitted; 
ach subscriber must take all cards published during eh term of his subscription. 
Correspondence relating to the card issue should be addressed to the Treasurer of 
the Torrey Botanical Club. 
Ames, O. Notes on Philippine orchids—VII. {n Ames, Orchidaceae 
6: 273-310. pl. 98-101. 18 O 1920. 
Ames, O. Orchidaceae. fasc. VI. pp. i-xiv + 1-335. pl. 80-101. 
Boston, 18 O 1920. 
Includes papers on The orchids of Mount Kinabalu, British North Borneo and 
Notes on Philippine orchids VII, here indexed separately. 
Ames, O., & Schweinfurth, C. The orchids of Mount Kinabalu, 
British North Borneo. In Ames, Orchidaceae 6: 3-233. pl. 80-97. 
18 O 1920. 
Anderson, J. P. Supplemental list of plants from southeastern 
Alaska. Proc. Iowa Acad. Sci. 26: 327-331. 1919. 
Arthur, J.C. Aecidiaceae (cont.). N.Am. FI.7: 337-404. 31 D1920. 
Arthur, J. C. New species of Uredineae— XII. Bull. Torrey Club 
47: 465-480. 29 O 1920. 
18 new species and several new coanbiaikions 
Bailey, C. H., & Gurjar, A.M. Respiration of cereal plants and grains. 
Jour. Biol. Chem. 44: 5-7. f. 2; 9-12. f. 1; 13-15; 17, 18. O 1920. 
Bakke, A. L., & Plagge, H. H. Studies upon the absorption and 
germination of wheat treated with formaldehyde. Proc. Iowa 
Acad. Sci. 26: 365-375. f. 96, 97. 1919. 
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