. The structure and development of crown gall : a plant cancer . Daisy XIX. Longitudinal sectio n of middle part of petiole A, between tumors (p. 47). Bu>. 255, Bureau of Plant Industry, U. S. Dept. of Agriculture Plate Daisy XIX. Tumor at Y on petiole A, showing the supporting stroma of tracheids (p. 47). Bui. 255, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate LXXXIII.

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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1912