INDEX TO AMERICAN BOTANICAL LITERATURE 
1915-1918 
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 sense. 
Reviews, and papers that pee exclusively to forestry, agriculture, horticulture, 
manufactured products of vegetable origin, or laboratory methods are not included, and 
ea mpt is made to index the literature of bacteriology. An occasional exception is 
n favor of some paper appearing in an American periodical which is devoted 
ae to botany. Reprints are not mentioned unless they differ from the hl in 
some important particular. If users of the Index will call the attention of the edito: 
to errors or omissions, their kindness will be appreciat 
dex is reprinted monthly on cards, and farnishea i in this form to subscribers 
at the rate of one cent for each card, Selections of cards are not permitted ; each 
subscriber must take all cards published during the term of his subscription, Corre- 
ndence relating to the card issue should be addressed to the Treasurer of the Torrey 
1 Club. 
Spo! 
Botanical C 
Angli, J. La ‘‘Araucaria araucona” (Mol.) Koch (= Araucaria im- 
bricata R. Pav.) y su resina sus relaciones con las demas coniferas. 
Bol. Acad. Nac. Cien Cérdoba 23: 1-84. f. I-21. 1918. 
Anthony, R. D. Methods and results in grape breeding. Proc. Soc. 
Hort. Sci. 1914: 81-86. Mr 1915. 
Atkinson, G. F. The genus Endogone. Brooklyn Bot. Gard. Mem. 
r: 1-17. 6 Jl 1918. 
Atkinson, G. F. The genus Galerula in North America. 
Philos. Soc. 577: 357-374. 19 Au 1918. 
Nineteen new species are described. 
Blakeslee, A. F., & Avery, B. T., Jr. A vegetative reversion in Por- 
tulaca. Brooklyn Bot. Gard. Mem. 1:18. 6 Jl 1918. 
_ [Abstract]. 
Britton, E.G. Musci. In Britton, N. L. The flora of the American 
Virgin Islands. Brooklyn Bot. Gard. Mem. 1: 103, 104. 6 Jl 1918. 
Britton, N. L. The flora of the American Virgin Islands. Brooklyn 
Bot. Gard. Mem. 1: 19-118. f. z. 6 Jl iy 
Includes chapters contributed by A. W. E W. Riddle, E. G. Britton and 
M. A. Howe. New species are d described in Opuntia vate ‘ef ermees (1), Lecania (1), 
and Miciiciste (x). 
Burns, G. P. Weather conditions and plant development. Brooklyn 
Bot. Gard. Mem. 1: 119-122. 6 Jl 1918. 
31 
Proc. Am. 
