. Elements of plant anatomy;. Botany -- Anatomy. ANATOMY OF TISSUES. 79 name, though it was given them before the true nature of their rehition to the hyphae threads was known. The hyphae com- posing pith and rind are not at all different from those of other fungi ; their w^alls consist of fungous cellulose. The algae which are found in the lichens are similar to those wdiich exist as separate plants ; they occur either in chains or as single cells. They contain chlorophyll, and in some instances. Fig. 38. Tissue of Ixocella tlnctora, teased out with needles to sliow tlie form of the elements.
. Elements of plant anatomy;. Botany -- Anatomy. ANATOMY OF TISSUES. 79 name, though it was given them before the true nature of their rehition to the hyphae threads was known. The hyphae com- posing pith and rind are not at all different from those of other fungi ; their w^alls consist of fungous cellulose. The algae which are found in the lichens are similar to those wdiich exist as separate plants ; they occur either in chains or as single cells. They contain chlorophyll, and in some instances. Fig. 38. Tissue of Ixocella tlnctora, teased out with needles to sliow tlie form of the elements. / threads of the felt-like tissue, o uninjured, o corroded crystals of calcium oxalate. </gouidia. x 300. — (Wiesner.) have been freed from their fungous companions, and found to grow on as independent algae. The most common form of lichen is a thallus, resembling somewhat that of the Hepaticae in the next higher group. To this there is no exact homologue in the real fungi. It has been suggested that the sclerotium formed by many of the higher fungi may be considered the corresponding organ. Even ad- mitting this to be true, the mycelium form of the true fungus is wanting in the lichen. The three foregoing classes, fungi, algae, and lichens, are generally considered true thallophytes, or plants with no dis- tinction of stem and leaf. Among the algae, however, are. 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 Gregory, Emily L. Boston, London, Ginn & Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotanya, bookyear1895
