192 INDEX TO AMERICAN BOTANICAL LITERATURE 
Weingart, W. Cereus serratus Weing. spec. nov. Monats. Kakteenk. 
22: 185-188. 15 D 1912. 
Wellington, R. Inheritance of the russet skin in the pear. Science II. 
37: 156. 24 Ja 1913. 
Wherry, E. T. Silicified wood from the Triassic of Pennsylvania. 
Proc. Acad. Nat. Sci. Philadelphia 64: 366-379. pl. 3, 4. 25S 1912. 
Williams, C. G. The farm grasses of Ohio. Ann. Rep. Ohio Agr. 
Exp. Sta. 30: 151-174. 1911. — [IIlust.] 
Wooton, E. O., & Standley, P. C. Descriptions of new plants pre- 
liminary to a report upon the flora of New Mexico. Contr. U.S. 
Nat. Herb. 16: 109-196 + vii-xi. p!. 48-50. 12 F 1913. 
Yamanouchi, S. Hydrodictyon africanum, a new species. Bot. Gaz. 
55: 74-79. f. 1-6. 15 Ja 1913. 
