. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. DETAILED ACCOUNT OF SPECIFIC DISEASES OF PLANTS 5II. Fig. 183.—Details of cranberry scald fungus {Guignardia vaccinit). i, A cran- berry leaf, showing pycnidia of Guignardia vaccinii thickly scattered over the under surface; a, a cranberry blossom blasted by Guignardia vaccinii, showing pycnidia on calyx, corolla, and pedicel; 6, a blasted fruit, showing pycnidia. a, A vertical section of a single pycnidium of Guignardia vaccinii from a cranberry leaf, showing pycno- spores in various s
. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. DETAILED ACCOUNT OF SPECIFIC DISEASES OF PLANTS 5II. Fig. 183.—Details of cranberry scald fungus {Guignardia vaccinit). i, A cran- berry leaf, showing pycnidia of Guignardia vaccinii thickly scattered over the under surface; a, a cranberry blossom blasted by Guignardia vaccinii, showing pycnidia on calyx, corolla, and pedicel; 6, a blasted fruit, showing pycnidia. a, A vertical section of a single pycnidium of Guignardia vaccinii from a cranberry leaf, showing pycno- spores in various stages of development. 3. An immature pycnospore of the same fungus, showing the partially formed appendage; a, the same, showing a little later stage of development; b and c, fully developed pycnospores and appendages. 4, 5, 6, 7, 8, and 9, Various stages in the germination and growth of pycnospores oiGuig- nardia vaccinii grown in weak sugar solution; 4, 5, 6, and 7, 72 hours after sowing; 8 and 9, 86 hours after sowing. 10, A vertical section of a perithecium of Guignardia vaccinii, showing asci, from a cranberry leaf collected in New Jersey. 11, Three asci, with ascospores showing variations in length of the stipe and the arrangement of the spores; a and 6, from perithecia on a leaf; c, from a pure culture. 12, A fresh,. 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 Harshberger, John W. (John William), 1869-1929. Philadelphia : P. Blakiston's Son & Co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1917
