. Diseases of cultivated plants and trees. Plant diseases; Plants -- Wounds and injuries; Plants, Protection of; Trees -- Diseases and pests. 243 DISEASES OF CULTIVATED PLANTS leaves, and more especially the sheathing portions, are seen to be more or less covered with rounded or elongated patches, covered with a delicate greyish-white mycelium, and bordered with brown. These patches often spread entirely over the sheath. When the fungus has reached this stage of development, the lower leaves are dead and the entire plant. Fig. 69. —I, Gibellina cenalis on wheat plant, nat. size; 2, ascuh with
. Diseases of cultivated plants and trees. Plant diseases; Plants -- Wounds and injuries; Plants, Protection of; Trees -- Diseases and pests. 243 DISEASES OF CULTIVATED PLANTS leaves, and more especially the sheathing portions, are seen to be more or less covered with rounded or elongated patches, covered with a delicate greyish-white mycelium, and bordered with brown. These patches often spread entirely over the sheath. When the fungus has reached this stage of development, the lower leaves are dead and the entire plant. Fig. 69. —I, Gibellina cenalis on wheat plant, nat. size; 2, ascuh with spores of same, highly mag ; 3, Ophiobolus graminis, on wheat plant, nat. size ; 4, perithecium of same, mag ; 5, spores of same, highly mag. dying, so that the car does not escape from the sheath, or at best is but imperfectly developed. At this stage numerous perithecia are developed on the leaves, leaf-sheaths, and internodes of the stem on those portions previously occupied by the greyish mycelium, but are usually most abundant, and often confined to the inner surface of the leaf-slieaths. Perithecia globose, sunk in the tissue of the host, neck pro-. 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 Massee, George, 1850-1917. New York : Macmillan
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Keywords: ., bookpublishernewyorkmacmillan, booksubjectplantdis, bookyear1910
