INDEX TO AMERICAN BOTANICAL LITERATURE 
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 
America being used in the broadest sense. 
Reviews, and papers that relate exclusively to foresty, agriculture, horti- 
ae, reesei gane: pratanty of vegetaiee origins. or a oratory methods 
nd f bacteriology. 
An occasional spades is uate ¢ in favor of some paper appearing in an Ameri- 
of the Index will call o attention of the editor to errors or omissions, their 
og will be appreciated 
s Index is ctatalk pene on cards, and furnished in this form to 
Sondices 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 the Treasurer of the Torrey Botanical Club. 
Kern, F. D. Distribution of Berberis vulgaris in Pennsylvania. 
Bull. Torrey Club 48: 263-269. 31 D 1921. 
Kern, F. D. The J. Roberts Lowrie Herbarium. Torreya 20: 
79-81. O 1921. 
Kern, F. D. Observations of the dissemination of the barberry. 
Ecology 2: 211-214. 3 D 1921. 
Keuchenius, P. E. Die Rindenbraune der Hevea brasiliensis. 
Centralbl. Bakt. Parasitenk. u. Infektionskr. 55: 14-74. 
f.- 1-33. 18 N 1921 
Keys, A. The Agricultural Department, Dominica. Kew Bull. 
Misc. Inform. 1921: 67-85. 1921. 
Joss T. R. A sectorial chimera in maize. Jour. Hered. 
a: 2B4c)> 32-0 25 S-1G2t. 
A. B. The marine algae of the Passamaquoddy region, 
New Brunswick. Contrib. Canad. Biol. 1917: 79-84. pl. 
&; sory 
Klugh, A. B. Springtime in the woods. Am. For. 27: 317- 
319, 324. My 1921. [Illust.] 
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