. Botany of the living plant. Botany. ./ B Fig. 372. A=Xanthona {Parmelia) parietina, the common foliaceous yellow Lichen. B = Cladonia rangifera, a fruticose Lichen. Both bear ascus-fruits, and are shown natural size. (After Strasburger.) (Chapter XL). The Lichens are very various in form. In simple cases they may be filamentous, as in Ephebe, which is like a filamentous Alga with a fungus growing in its mucilaginous walls. Some appear as flat gelatinous thalli, readily swelling with water, as in Collema, which is based upon the gelatinous Alga, Nostoc. Others are more firm in texture, and fo


. Botany of the living plant. Botany. ./ B Fig. 372. A=Xanthona {Parmelia) parietina, the common foliaceous yellow Lichen. B = Cladonia rangifera, a fruticose Lichen. Both bear ascus-fruits, and are shown natural size. (After Strasburger.) (Chapter XL). The Lichens are very various in form. In simple cases they may be filamentous, as in Ephebe, which is like a filamentous Alga with a fungus growing in its mucilaginous walls. Some appear as flat gelatinous thalli, readily swelling with water, as in Collema, which is based upon the gelatinous Alga, Nostoc. Others are more firm in texture, and form variously flattened thalH, more or less closely attached to the substratum of rocks, roofs, or tree-trunks, etc. Others again are erect or pendulous, and often branched, rising freely from j their base of attachment. In texture they are brittle when dry, but | more or less leathery when moist, and they vary greatly in colour j from grey to more vivid yellow, or even red. They are curiously A. 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 Bower, F. O. (Frederick Orpen), 1855-1948. London, Macmillan


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919