INDEX TO AMERICAN BOTANICAL LITERATURE 
1923 
~The aim of this Index is to include all current botanical literature written by 
Americans, published in America, or sae a pon American material; the word 
America being used in the broadest se 
Reviews, and papers that relate see to forestry, agriculture, horti- 
culture, sraahe- tate products of vegetable origin, | or laboratory methods 
An occasional sales 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 the attention of the editor 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 three cents or 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 Botanica! Club. 
Adams, J. The effect on certain plants of altering the daily 
period of light. Ann. Bot. 37: 75-94. Ja 1923. 
Arber, A. On the ‘squamulae intravaginales’ of the Helobieae. 
Ann. Bot. 37: 31-42. jf. 1-5. Ja 1923. 
Benedict, R. C. New bud sports in Nephrolepis. Genetics 8: 
75-95. pl. 1,2 + f.1-4. Ja 1923. 
Benedict, R. C. Which Boston fern is best? Jour. Hered. 13: 
255-263. f. 3-9. 15 F 1923. 
Bitter,G. Beitrage zur Kenntnis der Gattung Sedum |. No- 
tizbl. Bot. Gart. und Mus. Berlin-Dahlem 8: 281-284. 
I ‘ 
Includes Sedum Nussbaumerianum, sp. nov., from Mexico. 
Clark, L. The embryogeny of Podophyllum peltatum. Univ. 
Minnesota Stud. Biol. Sci. 4: 111-138. pl. 20-25 +f. 1-3. Ja 
1923. 
Cook, O. F. Are any species uniform? Jour. Hered. 13: 285- 
287. 15 F 1923. 
Fairchild, D. Garden for the production of tropical and sub- 
tropical fruits. Science Il. 57: 167, 168. 9 F 1923. 
Fawcett, W., & Rendle, A.B. Notes on Jamaican Ternstroemi- 
aceae. Jour. Bot. 61: 52-54. Ja 1923. 
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