. Text-book of botany, morphological and physiological. Botany. Fig. 211,—A piece of the foliaceous thallus oiPel- tigera horizontals; a the apothecia; r the rhizines (natural size). FIG. 2to.—A, B Graphis elegans, a crustaceous Lichen growing on the bark of the Holly ; A natural size/i? slightly magnified; C Pertusaria Wulfeni, another crustaceous Lichen (slightly magnified).. Fig. 212.—Collemapulposum, a gelatinous Lichen (slightly magnified). passes over, through various gradations, into that of the Foliaceous Lichens; the latter forms flake-like expansions often curled, which can be comple
. Text-book of botany, morphological and physiological. Botany. Fig. 211,—A piece of the foliaceous thallus oiPel- tigera horizontals; a the apothecia; r the rhizines (natural size). FIG. 2to.—A, B Graphis elegans, a crustaceous Lichen growing on the bark of the Holly ; A natural size/i? slightly magnified; C Pertusaria Wulfeni, another crustaceous Lichen (slightly magnified).. Fig. 212.—Collemapulposum, a gelatinous Lichen (slightly magnified). passes over, through various gradations, into that of the Foliaceous Lichens; the latter forms flake-like expansions often curled, which can be completely detached from the ground, stones, moss, bark, &c. which support them, since they are attached to it only in places by a few organs of attachment, the Rhizines. The foliaceous thallus often attains considerable dimensions, in the large species of Peltigera and Sticta as much as a foot in diameter, and from § to 1 mm. in thickness, and then generally assumes a circular form; at the growing margin it forms rounded indented lobes (Fig. 211 and Fig. 213, J5). A third form of the Lichen-thallus, also united with the previous one by transitional forms, is shown in the Fruticose Lichens, which are attached only at one spot and with a narrow base, and rise from it in the form of small much-branched shrubs. The branches of the thallus are either flat and ligulate, like th2 lobes of many foliaceous Lichens, or slender and cylindrical (Fig. 213, A), In Cladonia and Stereocaulon we have not so much a transition from the foliaceous to the fruticose thallus as a combination of the A few additional historical notes will be found at the end of this 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 Sachs, Julius, 1832-1897; Vines, Sydney Howard, 1849-1934. ed. and tr. Oxford, Clarendon press
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1882
