. Diseases of economic plants. Plant diseases. DISEASES OF SPECIAL CROPS 89 Hypochnose ^ (Hy- pochnus ochroleuca, Noack). — Hypoch- nose is principally a leaf affection causing blight and loss of the leaves, and thereby weakening the vital- ity of the tree. Superficially this disease resembles the bhght, with which it might be confounded by the casual ob- server. It may be readily distinguished, however, by two char- acters: first, the manner in which the leaves droop and mat together, which is quite different from the habit of the blight, the leaves of which neither droop nor mat; second, by
. Diseases of economic plants. Plant diseases. DISEASES OF SPECIAL CROPS 89 Hypochnose ^ (Hy- pochnus ochroleuca, Noack). — Hypoch- nose is principally a leaf affection causing blight and loss of the leaves, and thereby weakening the vital- ity of the tree. Superficially this disease resembles the bhght, with which it might be confounded by the casual ob- server. It may be readily distinguished, however, by two char- acters: first, the manner in which the leaves droop and mat together, which is quite different from the habit of the blight, the leaves of which neither droop nor mat; second, by the presence of small scle- rotia, white when young, cinnamon-brown when mature, upon the twigs adjacent to the affected leaves. These sclerotia usually measure about 2-3 mm. in diameter. To-= 1 Stevens, F. L., and Hall, J. G., Ann. Mycol. VII, 49, Fig. 34.—Hypochn ise, showing matting of leaves. 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 Stevens, Frank Lincoln, 1871-1934; Hall, John Galentine, 1870-. New York, Macmillan
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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910
