138 INDEX TO AMERICAN BOTANICAL LITERATURE 
Smith, E. F. On some resemblances of crown-gall to human cancer. 
Science II. 35: 161-172. 2 F 1912. 
Smith, R. E., & Smith, E.H. California plant diseases. Univ. Calif. 
Publ. Agr. Exp. Sta. Bull. 218: 1039-1193. f. 1-102. Je 1911. 
Standley, P. C. A new leather flower from Illinois. Smithsonian 
Misc. Coll. 56%: 1-3. pl. r. 7 F 1912. 
Viorna Ridgwayi sp. nov. 
Standley, P. C. Three new plants from Alberta. Smithsonian Misc. 
Coll. 56%: 1-3. 
19 
D eataie pumila, Artemisia laevigata, Gaillardia bracteosa spp. nov., Svida pubescens 
Sieve F. L. The apple bitter rot. Rep. Biol. N. Carolina Exp. 
Sta. 32: 147. 1909. 
Stevens, F. L. A serious. lettuce disease. (Lettuce sclerotiniose.) 
N. Carolina Agr. Exp. Sta. Bull. 217: 7-21. f. 1-8. Jl 1911. 
Stevens, F. L., & Hall, J.G. A new figanthracnose. (Colletotrichose.) 
Rep. Biol. N. Carolina Exp. Sta. 32: 86-89. f. 49-51. 1909. 
Stevens, N.E. The morphology of the seed of buckwheat. Bot. Gaz. 
53: 59-66. f. 1-8. 17 Ja 1912. 
Stone, G. E. Diseases of the tomato. Massachusetts Agr. Exp. Sta: 
Bull. 138: 3-32. f. 1-9. Je 1911. 
Sudworth, G. B., & Mell, C. D. Distinguishing characteristics of 
North American gumwoods, based on the anatomy of the secondary 
wood. U.S. Forest Serv. Bull. 103: 1-20. f. 1-9. 28 O 1911. 
Sudworth, G.B., & Mell,C. D. The identification of important North 
American oak woods, based on a study of the anatomy of the second- 
ary wood. U.S. Forest Serv. Bull. 102: 1-56. f. 1-48. 11 D 1911. 
Theissen, F. Polyporaceae austro-brasilienses imprimis rio grandenses. 
Denks. Akad. Wiss. Wien Math.-Nat. 83: 1-38. pl. 1-7-+f. 1-8: 
19Il. if 
Wieland, G. R. A study of some American fossil cycads. Part VI. 
On the smaller flower-buds of Cycadeoidea. Am. Jour. Sci. IV. 33+ 
73-91. f. 1-11. F 1912. 
Williams, R.S. Mnium flagellare Sull. and Lesq. in North America. 
Bryologist 15: 10. Ja 1912. 
Wolf, F. A. A disease of the cultivated fig, Ficus Carica L. Ant 
Myc. 9: 622-624. 1D ort. [lIllust.] 
Woolsey, T. S. Western yellow pine in Arizona and New Mexico. 
U. S. Forest Serv. Bull. 101: 1-64. pl. r-4+f. 1-12. 24 N 1911. 
