INDEX TO AMERICAN BOTANICAL LITERATURE 
1913-1914 
e aim of this Index {s 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 relate exclusively to forestry, agriculture, horticulture, 
manufactured products of vegetable origin, or laboratory methods are not included, and 
no attempt is made to index the literature of bacteriology. An occasional exception 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 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 appreciate 
cigs ndex is reprinted monthly on cards, and fainitehed 2 in this form to subscribers 
at the rate of one cent for each card. Selections of cards are not permitted ; each 
ea must take all cards published during the term of his subscription, Corre- 
spondence relating to the card issue should be silirtaied to the Treasurer of the Torrey 
Botanical Club, 
Bicknell, E. P. Viola emarginata in Massachusetts. Rhodora 16: 
76,77. 27 Ap 1914. 
Blakeslee, A. F., & Schulze, A. F. A possible mutant in the bellwort 
(Oakesia sessilifolia), which prevents seed formation. Science II. 
39; Gai, 622. f..7, 2. 24 Ap 1914. 
Bédeker, F. Mamillaria Guiirkeana Béodeker, sp. nov. Monats. 
Kakteenk. 24: 52-55. 15 Ap 1914. [Illust.] 
Borgesen, F. The species of Sargassum, found along the coasts of the 
Danish West Indies, with remarks upon the floating forms of the 
Sargasso sea. 1-20. f. 1-8. Kobenhavn, 1914. 
Reprinted from vol. 32 of ‘‘ Mindeskrift’’ for Japetus Steenstrup. 
Bolley, H. L. Wheat: Soil troubles and seed deterioration. Causes of 
soil sickness in wheat lands. Possible methods of control. Crop- 
ping methods with wheat. N. Dakota Agr. Exp. Sta. Bull. 107: 
9-94. f. 1-45. D 1913. 
Boyer, C. S. A new diatom. Proc. Acad. Nat. Sci. Philadelphia 66: 
219-221. pl. 10. Mr 1914. 
Chaetoceros Elmorei sp. nov. 
Brandegee, T. S. Plantae Mexicanae Purpusianae, V. Univ. Cali- 
fornia Publ. Bot. 4: 375-388. re Je 1913. 
Thirty-five new species are describe 
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