﻿Index to American botanical literature 649 



Stockberger, W. W. Drug plants under cultivation. U. S. Dept. 



Agr. Farm. Bull. 663: i-39- /• iS. 5 Je 1915. 

 Stout, A. B. The origin of dwarf plants as shown in a sport of Hibiscus 



ocuUroseus. Bull. Torrey Club 42: 429-450. pi. 26, 27. 22 S 1915. 

 Studhalter, R. A,, & Ruggles, A. G. Insects as carriers of the chestnut 



blight fungus. Pennsylvania Dept. Forest. Bull. 12: 7-33./. 1-4. 



Ap 1915- 

 Sudworth, G. B. The cypress and juniper trees of the Rocky Mountain 



region. U. S. Dept. Agr. Bull. 207: 1-36. pi. 1-26 + maps i-ii, 



17 Jl 1915- 

 Sudworth, G. B. Forest trees of the Pacific slope. U. S. Dept. Agr. 



Forest Serv. 1-441. 1908. 

 Taubenhaus, J. J. The probable non-validity of the genera Botryo- 



diplodia, Diplodiella, Chaetodiplodia, and Lasiodiplodia. Am. Jour. 



Bot. 2: 324-331- Pl- 12-14- Jl 1915- 

 Thaxter, R. New I ndo- Malayan Laboulbeniales. Proc. Am. Acad. 



Arts. & Sci. 51: 3-51. Au 1915- 



Includes Tettigomyces nov. gen. and forty-six new species in other genera. 

 Thorn, C, & Turesson, G. W. Penicillium avellaneum, a new ascus- 



producing species. Mycologia 7: 284-287. /. i-j. S 1915. 

 Thompson, C. H. Ornamental Cacti: their culture and decorative 



value. U. S. Dept. Agr. Plant Ind. Bull. 262: 5-24. pl. 1-18. 17 



D 1912. 

 Trelease, W. The Agaveae of Guatemala. Trans. St. Louis Acad. 



Sci. 23: 12^152. pl. 6-35. 15 Jl 1915- 



Includes fifteen new species in Agave and four in Furcraea. 

 True, R. H., & Bartlett, H. H. The exchange of ions between the roots 



of Lupinus albus and culture solutions containing two nutrient 



salts. Am. Jour. Bot. 2: 311-323-/. IS- Jl 1915- 

 Vestal, A. G. An associational study of Illinois sand prairie. Bull. 



Illinois State Lab. Nat. Hist. 10: 1-96. pl 1-5 ■ S 1913- 

 Waldron, R. A. Physiological studies on the chestnut blight disease. 



Ann. Rep. Pennsylvania Agr. Exp. Sta. 1912-1913: 152-156./. 1-4, 



I-IV. 1914- 

 Westgate, J. M. Variegated alfalfa. U. S. Dept. Agr. Plant Ind. Bull. 



169: 5-63- pl- 1-9 + i-S- 3 F 1910. 

 Whiting, A. L. A biochemical study of nitrogen in certain legumes. 



Illinois Agr. Exp. Sta. Bull. 179: 471-542- pl- i-i?- Mr 1915- 

 Whitten, J. H. The effects of kerosen 



the viability and growth of Zea mais. 



Hist. 10: 245-273. pl- 16. O 1914. 



