. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. 4 BULLETIN 722, U. S, DEPARTMENT OF AGRICULTURE. The chief gross character by which the fruiting organ of the fungus may readily be recognized is a hymenium consisting of numerous firm, thick, sharp-pointed teeth of a light-brown color (figs. 1 and 2). The upper surface is almost black in old specimens (figs. 3 and 4), usually of a lighter color when young, and concentrically zoned, each zone representing a year's growth. In a growing condition the outer zone is white or brown, conte
. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. 4 BULLETIN 722, U. S, DEPARTMENT OF AGRICULTURE. The chief gross character by which the fruiting organ of the fungus may readily be recognized is a hymenium consisting of numerous firm, thick, sharp-pointed teeth of a light-brown color (figs. 1 and 2). The upper surface is almost black in old specimens (figs. 3 and 4), usually of a lighter color when young, and concentrically zoned, each zone representing a year's growth. In a growing condition the outer zone is white or brown, context solid, and of a Mars-orange to orange-rufous The minute characters of the fruiting organ are: Spores hyaline, broadly ellipsoid, 4 by 6 n, teeth covered with. Fig. 1. -Sporophore of Echinodontium tinclorium on hemlock. Bottom view, showing fresh hymenium or spore-producing surface. short colorless setae or microscopic spines. The hymenium of the young growing fungus is by no means toothed in the beginning but is typically dasdaloid, a character often misleading to the unin- itiated when the interior has not been examined. On account of its tinctorial property, the powdered fungus mixed with tar or oil is used by the Indians as a war paint. The fungus is likewise employed by the Indians of Alaska for medicinal purposes and as a dye. For the latter reason it has received the common name of Indian-paint fungus. Since an oily alkaloid has been detected by the analysis of the fungus, there is a possibility of its i Ridgway, Robert. Color Standards and Color Nomenclature, pi. 2. Washington, D. C, 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 United States. Dept. of Agriculture. [Washington : U. S. Dept. of Agriculture]
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