. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. RHYTISMA. 243 is completed. In the following spring, the sclerotium-spots on the fallen leaves have become thicker and superficially wrinkled. At this stage the apothecia are produced, and dehisce by fine elongated fissures; they contain club-shaped asci and thread-like paraphyses with hooked ends. The thread- like ascospores are ejaculated with considerable force, and reach. Fig. 128.—Rhi/tisma acei-inum. Two apoth
. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. RHYTISMA. 243 is completed. In the following spring, the sclerotium-spots on the fallen leaves have become thicker and superficially wrinkled. At this stage the apothecia are produced, and dehisce by fine elongated fissures; they contain club-shaped asci and thread-like paraphyses with hooked ends. The thread- like ascospores are ejaculated with considerable force, and reach. Fig. 128.—Rhi/tisma acei-inum. Two apothecial cushions on leaf of Acer campestre in first slimmer. A, Leaf-apex of Acer platanoides with the mature apothecial cushions as seen in the second summer, with their characteristic wavy marking, (v. Tubeuf del.) maturity in May or June. According to Klebahn,^ the spores have a mucilaginous membrane, but this does not throw much light on the problem of how they reach the leaves of trees; wind, however, would seem to be the agent for distribution. In three weeks after infection, leaves show yellow spots; in eight weeks the pycnidia appear. ^Botan. Centralblatt, Lviii., 1894, p. 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
