INDEX. 129 



Page. 



Watermelon, culture and diseases in Texas 20, 45-46, 111 



Water willow. See Willow, water. 



Wehmer, C, on occiu-rence of Colletoti'ichum 36, 108 



Wheat, culture and diseases in Texas 21 , 47 



Whitebrush, native thicket growths in Texas 22 



Whitening of the cedar. See Cyanospora albicedrae. 



White-rust, occurrence on plants in Texas 44, 86, 90-91, 92, 98, 99, 101, 112 



Wild China tree. See Tree, wild China. 



gourd. See Gourd, M'ild. 



morning-glory. See Morning-glory. 



plants. See Plants, wild. 



tobacco. See Tobacco, wild. 



Willow, diseases in Texas 82 



water, occurrence of leaf-spot in Texas '. . . . 104-105 



Wilson, G. W., on hosts of North American Peronosporales 86, 92, 108 



J. K., Stewart, F. C, and French, G. T., on diseases of plants 48,108 



Wind flower. See Flower, wind. 



Wistaria, occurrence of leaf-spot in Texas 82 



Wither-tip, occurrence on Citrus spp. in Texas 27-28 



Wolf, F. A., and Heald, F. D. See Heald, F. D., and Wolf, V. A. 

 Wood sorrel. See Sorrel, wood. 



Xanthium spp. See Cocklebur. 



Yucca spp., diseases in Texas 106, 109, 112 



Zanthoxylum clava-herculis. See Ash, prickly. 

 Zea mays. See Corn. 



Zimmerman, A., determination of certain plant diseases 52 



Zinnia, diseases in Texas 89, 109 



100833°— Bui. 226—12- 9 



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