. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 240 Bulletin 193. The upper surface is marked by concentric furrows and ridges wliich mark off the annual layers. The fungus is thus 73.— Polyporus igniarius, from maple. It is very generally distributed through hardwood forests. It is especially abundant in certain hardwoods in the Adirondacks. In some sections a large percentage of the beech, birch and maple is affected. A quantity of the wood of affected trees was collected both at C h i 1
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 240 Bulletin 193. The upper surface is marked by concentric furrows and ridges wliich mark off the annual layers. The fungus is thus 73.— Polyporus igniarius, from maple. It is very generally distributed through hardwood forests. It is especially abundant in certain hardwoods in the Adirondacks. In some sections a large percentage of the beech, birch and maple is affected. A quantity of the wood of affected trees was collected both at C h i 1 d w o o d, St. Law- rence Co., in 1896, and at Clearwater, TI e r k i m e r Co., in 1898. At the lat- ter place, the second flag station north of Fulton Chain, on the E". Y. C. R. R., there were excellent opportunities for studying it on the maple, and for de- terminino; the conditions which favor the entrance of the fungus into the •7/f Q^t.' ^ j>j- V 7 7 V? r) 7 • • • heart of the tree. Since /4.— Section of friiit body of Polyporus igniarius. the mycelium cannot enter through the living cambium of the tree, an " infection court" must. 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 Cornell University. Agricultural Experiment Station. Ithaca, N. Y. : The University
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