. Diseases of deciduous forest trees. Trees -- Diseases and pests. Bui. 149, Bureau of Plant Industry, U. S. Dept. of Agricultur Plate Fig. 1.—A Dead Yellow Birch Tree with Fruiting Body of Polyporus Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Von Schrenk, Hermann, 1873-1953; Spaulding, Perley, 1878-. Washington : G. P. O.

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