INDEX TO AMERICAN BOTANICAL LITERATURE i 
Robinson, B. L. A descriptive revision of the Colombian Eupatoriums. 
Proc. Am. Acad. Art. & Sci. 54: 264-330. 8 O 1918. 
Robinson, B. L. Diagnoses and notes relating to tropical American 
Eupatorieae. Proc. Am. Acad. Arts & Sci. 54: 235-263. 8 O 1918. 
New species are described in Eupatorium (37), Fleischmannia (1) and Kuhnia (1). 
Robinson, B. L. Keyed recensions of the Eupatoriums of Venezuela 
and Ecuador. Proc. Am. Acad. Arts & Sci. 54: 331-367. 8 O 1918. 
Rolfs, P. H., & Fawcett, H.S. Fungus diseases of scale insects and 
white fly. Florida Agr. Exp. Sta. 119: 71-82. f. 14-31. N 1913. 
Rusby, H. H. Viburnum prunifolium. Addisonia 3: 59. pl. I70. 
S 1918. 
Sampson, A. W. Climate and plant growth in certain vegetative asso- 
ciations. U.S. Dept. Agr. Bull. 700: 1-72. f. 1-37. 14 O 1918. 
Sargent, C. S. Notes on North American trees—III. Tilia. Bot. 
Gaz. 66: 421-438. 15 N 191 
Five new species and 7 varieties are jel. 
Shaw, W. R. Some microtechnical methods and devices. Philip. 
Jour. Sci. 13: (Bot.) 241-261. f. 1-5. Jl 1918. 
Schneider, C. Notes on American willows—II. The species related 
to Salix glauca L. Bot. Gaz. 66: 318-353. 16 O 1918. 
Includes Salix fullertonensis, S. anamesa, spp. nov., and several new varieties and 
combinations. 
Shufeldt, R. W. Lion's foot, the jewel weeds, and other autumn 
plants. Am. Forestry 24: 603-609. f. 1-12. O 1918. 
Small, J. K. Solidago squarrosa. Addisonia 3: 43, 44- pl. 102. S 
1918. 
Stevens, F. L., Ruth, W."A., & Spooner, C.S. Pear blight wind borne. 
Science II. 48: 449, 450. 1 N 1918. 
Stevens, O. A. The flora of North Dakota. Science II. 48: 448, 449. 
1 N 1918. 
Stewart, J. P. Factors influencing yield, color, size and growth in 
apples. Proc. Soc. Hort. Sci. 1911: 66-78. F 1912. 
Thaxter, R. Extra-American Da cee Seer eae Proc. 
ag Acad. Arts & Sci. 53: 697-749. Jl 19 
ncludes new species in Dimeromyces (3), Noses (8), Rhizomyces (5), 
eee (4), and Stigmatomyces (28). 
Thaxter, R. New Laboulbeniales from Chile and New Zealand. 
Proc. Am. Acad. Arts. & Sci. 54: 207-232. 5S 1918. 
Includes Diandromyces and Eudimeromyces, gen. nov., and 23 new species in 
various genera 
