. Manual of tree diseases . Trees. MAPLE DISEASES 235 are three or four inches long and project two or three inches from the tree. The under surface of the shelves is composed of pendent bristles or teeth (Fig. 43). The spores are borne. FiQ. 43. — Lengthwise section through a fruiting-body of Hydnum septentrionale. over the surface of the teeth. The life history and control of the wood-rotting fungi are more fully discussed on page 64. White Streaked Sapwood-Rot Caused by Pleurotus ostreatus Jacqu. Maples and other deciduous trees, such as basswood, elm and oak, are sometimes found affected b
. Manual of tree diseases . Trees. MAPLE DISEASES 235 are three or four inches long and project two or three inches from the tree. The under surface of the shelves is composed of pendent bristles or teeth (Fig. 43). The spores are borne. FiQ. 43. — Lengthwise section through a fruiting-body of Hydnum septentrionale. over the surface of the teeth. The life history and control of the wood-rotting fungi are more fully discussed on page 64. White Streaked Sapwood-Rot Caused by Pleurotus ostreatus Jacqu. Maples and other deciduous trees, such as basswood, elm and oak, are sometimes found affected by this sap wood-rot. Infection takes place in open wounds caused by various agents. The decayed area of wood is lighter in color than the normal wood and is bounded by a narrow brown zone. The medullary-. 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 Rankin, W. Howard (William Howard), b. 1888. New York : The Macmillan Company
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