. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 338 FUNGOUS DISEASES OF PLANTS XXXVIII. LEAF BLIGHT OF CRANBERRY Pestalozzia Guepini Desm. var. Vaccinii Shear Shear, C. L. Cranberry Diseases. Bureau Plant Ind. U. S. Dept. Agl. Built. 110: 38-39- 19°7- This fungus is often found upon the cranberry, but it is doubt- less of minor importance as affecting the production of berries. It occurs upon fruit and leaves. The appear- ance of affected berries is not particularly characteristic. The conidia are produced in quantity upon affec
. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 338 FUNGOUS DISEASES OF PLANTS XXXVIII. LEAF BLIGHT OF CRANBERRY Pestalozzia Guepini Desm. var. Vaccinii Shear Shear, C. L. Cranberry Diseases. Bureau Plant Ind. U. S. Dept. Agl. Built. 110: 38-39- 19°7- This fungus is often found upon the cranberry, but it is doubt- less of minor importance as affecting the production of berries. It occurs upon fruit and leaves. The appear- ance of affected berries is not particularly characteristic. The conidia are produced in quantity upon affected leaves placed in a moist chamber. The conidia are usually four-septate with the three central cells dark colored. The hyaline apical cell is furnished with from three to four filiform. Fig. 161. Pestalozzia Guepini. (After Shear) a, acervulus ; b, conidia; c and d, germinating conidia appendages, and the basal cell has a single shorter appendage. It is interesting to note that in the germination of this fungus one or more germ tubes are developed from the basal hyaline cell. The fungus grows vigorously in artificial culture. The mycelium is hyaline, and it develops a pinkish color when the acervuli are formed. The spores appear in about ten days after sowings are made if conditions are favorable. Pestalozzia Hartigii Tub. is a fungus of importance in forest tree nurseries where it attacks the seedlings of young trees of pine. 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 Duggar, Benjamin M. (Benjamin Minge), 1872-1956. Boston ; New York : Ginn
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