. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 398 UREDINEAE. The anatomical changes exhibited in diseased parts of pear- leaves have been briefly described by Fentzling.^ He found a radial elongation of the cells of the spongy parenchyma and an accompanying accumulation of starch. Wakker, about the same time, obtained similar results in the case of Crataegus Oxyacantha- deformed by G. clavariaeforme (see p. 387). Wakker observed a diminished formation of calciu
. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 398 UREDINEAE. The anatomical changes exhibited in diseased parts of pear- leaves have been briefly described by Fentzling.^ He found a radial elongation of the cells of the spongy parenchyma and an accompanying accumulation of starch. Wakker, about the same time, obtained similar results in the case of Crataegus Oxyacantha- deformed by G. clavariaeforme (see p. 387). Wakker observed a diminished formation of calcium oxalate; Fentzling, however, found increased deposit of the same salt, not only in the form of. FiQ. 233.—GyTmwsporfingium. sabinae in the form of Roestclia cancellata on leaves of Pear. A few twigs showing the abundance of aecidia over tlie whole tree. (v. Tubeuf phot.) isolated crystals but as masses. Cork-formation was suspended in Wakker's case, while in Fentzling's a partial formation of cork was distinguishable beneath the epidermis. The increased thickness of diseased leaves is due principally to multiplication of the spongy parenchyma, the upper layers of which frequently become more or less palisade-like. "When pycnidia (spermogonia) are formed on the upper leaf-surface, the palisade parenchyma ^ Fentzling [loc. cit.) and Peglion (Eivista di Patologia Vegetak, ii.), also describe these 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 Tubeuf, Karl, freiherr von, 1862-1941; Smith, William G. London ; New York [etc. ] : Longmans, Green & co.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
