INDEX TO AMERICAN BOTANICAL LITERATURE 
1921 
The aim of this Index is to include all c t botanical literature written by 
Americans, published in America, or rt upon American material; the word 
America being used in the broadest sen: 
Reviews, and papers that relate ak a to foresty, agriculture, horti- 
Seaebic ee saree! of vegetable origin, or labora atory methods 
f bacteriology. 
An occasional pene is made i in favor of some paper appearing in an Ameri- 
can 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 satis attention of the editor to errors or omissions, their 
kindness will be a ed. 
This Index is fuk wt 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 the Treasurer of the Torrey Botanical Club. 
Adams, J. F. Observations on the spores of Sichzophyllum 
commune. Torreya 21: 98-100. D Ig2i._ [Illust.] 
Allen, W. E. Some work on marine So kgecpeceeioe Trans. 
Am. Micr. Soc. 40: 177-181. 
Allen, W. E. The investigation of ocean pasturage. Ecology 
2: 215-219... 4 De 1ga1. 
Ames, O. Additions to the orchid flora of Panama. Proc. Biol. 
Soc. Washington 34: 149-154. 21 D 1921. 
Includes 7 new species. nee 
Ames, O. Eria gigantea. Gigantic eria. Addisonia 6: 41, 
42, pl. 273. 240 Wet. 
Anderson, E. G. The inheritance of salmon silk color in maize. 
Cornell Univ. Agr. Exp. Sta. Mem. 48: 539-554. N 1921. 
Anderson, P. J., & Ickis, M. G. scree aaa pe of 
Helvella. Mycologia 13: 201-229. pl. 11, 
Arthur, J. C. Memoranda and index of cultures of Uredineae, 
1899-1917. Mycologia 13: 230-262. 1921. 
Ashe, W. W. Notes on Rhododendron. Rhodora 23: 177-179. 
24 O 1921. 
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