. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 39G UREDINEAK Jun. virgiiiiana, and Jim. pkocnicea. (A reported oecurrence ou Finns halqjcnsis is probably an error.) The sporogenoiis cushions are little dark-lnown protuberances which l)i-(3ak forth in spring from swellings, or on green. Fig. 230.—Gymnos/toronfjium snhirKie on twigs of Junipirun SdOimi, at the time of lilionition of spores, (v. Tubeuf jihot.) twigs and scale-leaves. These bodies absorb water, swell,
. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 39G UREDINEAK Jun. virgiiiiana, and Jim. pkocnicea. (A reported oecurrence ou Finns halqjcnsis is probably an error.) The sporogenoiis cushions are little dark-lnown protuberances which l)i-(3ak forth in spring from swellings, or on green. Fig. 230.—Gymnos/toronfjium snhirKie on twigs of Junipirun SdOimi, at the time of lilionition of spores, (v. Tubeuf jihot.) twigs and scale-leaves. These bodies absorb water, swell, and run together, forming transparent gelatinous masses (Figs. 230 and 231). The teleutospores resemble those of G. juniperinu7n, but have only four germ-pores; they germinate on the gelatinous masses, and produce promycelia and sporidia. The latter germinate at once, chiefly on leaves of Pyrus com- munis. The pycnidia are produced on the upper epidermis as sticky yellow spots bearing darker dot-like pycnidia. The aecidia (Boestelia canceUata) are found in September on the under-surface of the leaves of pear, also on leaf-petioles, young shoots, and even on the fruits. The peridia differ from both. 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. London, New York [etc. ] : Longmans, Green & co.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
