INDEX TO AMERICAN BOTANICAL LITERATURE 
1918-1919 
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 stag used in the broadest se 
Reviews, and papers that neue exclusively to piaeah agriculture, horticulture, 
csiteenued products of vegetable origin, or laboratory methods are not included, an 
no attempt is made to index the literature af bacteriology. ee occasional tepid 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 Se in 
some important particular. If users of the Index will call the attention of the edito 
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 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. 
spondence relating to the card issue should be addressed to the Treasurer of the Torrey 
Botanical Club. 
Atanasoff, D. A novel method of ascospore discharge. Mycologia 
II: 125-128. f. 1-3. .7 Je 1919. 
Bacon, A. E. Along highway and cross-country in Oklahoma. Ver- 
mont Bot. & Bird Club Bull. 4 & 5: 8-12. Ap 1919. 
Bailey, I. W. Depressed segments of oak stems. Bot. Gaz. 67: 
438-441. f. -4. 19 My 1919. 
Beach, W. S. The Fusarium wilt of China aster. Michigan Acad. 
Sci. Ann. Rep. 20: 281-308. pl. 18-22 +f. 28. 22 N. 1918. 
Bennett, C. W. Soft rot of pepper caused by Bacillus carotovorus. 
Michigan Acad. Sci. Ann. Rep. 20: 351, 352. pl. 38-4go. 22 N 
1918 
Bertoni, M. S. Contributiones preliminares al estudio sistematico, 
biologico y economico de las plantas del Paraguay. An. Cien. 
Paraguayos 2: 135-142. Ja 1918. 
Includes Cedrela tubiflora and Chorisia Josephinae, spp. nov. 
Bertoni, M.S. Essai d’une monographie du genre Ananas. An. Cien. 
Paraguayos 2: 250-322. Ja 1918. 
Bertoni, M. S. Graminaceas de las regiones forestales litorales del 
Alto Parana (Paraquaya, Brasilefia y Argentina). An. Cien. Para- 
guayos 2: 143-166. Ja 10918. ; 
381 
