404 INDEX TO AMERICAN BOTANICAL LITERATURE 
Pritchard, F.J.,& Porte,W.S. The relation of temperature and 
humidity to tomato leaf spot (Sepioria saan tee Speg.). 
Phytopathology 14: 156-169. pl. 4. j. 1-9. ‘Mr’ 12 Ap 
1924. 
Quick, B. E. A comparative study of the distribution of the 
climax association in southern Michigan. Mich. Acad. 
Sci. Papers 3: 211-243. pl. 20. The Macmillan Co., New 
York. 1924. 
Reddy, C. S., & Holbert, J. R. The black-bundle disease of 
corn. Jour. Agr. Research 27: 177-205. pl. 1-6. 26 Ja 
1924. 
Rehder, A. Forsythia viridissima, var. Koreana. Jour. Arnold 
Arboretum 5: 134-135. “Ap” 1924. 
Reynolds, E.S. Some relations of Fusarium Lini and potassium 
cyanide. Am. Jour. Bot. 11: 215-217. 21 Ap 1924. 
Robinson, B. L. Miss Day. Rhodora 26: 41-47. ‘“‘Mr’’ 24 
Ap 1924.  [Illust.] 
Rusby, H. H. Tropical American plants at home—I. The 
begonias. Jour. New York Bot. Gard. 25: 107-111. Ap 
1924. 
Schaffner, J. H. Additions to the catalog of Ohio vascular 
plants. Ohio Jour. Sci. 24: 107-116. 26 Mr 1924. 
Schaffner, J. H. Expression of the sexual state in Sagittaria 
latifolia. Bull..Torrey Club 51: 103-112. “Mr” 22 Ap 
1924. 
Scott, D. H. Extinct plants and problems of evolution. I-XIV. 
1-240. f. I-63 and frontispiece. 1924. 
Seaver, F. J. Cup-fungi of common occurrence. Torreya 24: 
17-20. pl.2. Mr-—Ap 1924. 
Severin, H. H. P. Curly leaf transmission experiments. Phy- 
topathology 14: 80-93. f. 1. ‘“F’”’ 20 Mr 1024. 
Shapovalov, M., & Lesley, J. W. The behavior of certain vari- © 
eties of tomatoes towards Fusarium-wilt infection in Cali- 
fornia. Phytopathology 14: 188-197. pl. 7-8. Ap 1924. 
