Beiträge zur Anatomie und Morphologie der Mangrove-Pflanzen insbesondere ihres Wurzelsystems /

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Thesis (doctoral)--Friedrichs-Universität Halle-Wittenberg, 1913. Includes bibliographical references. "Die vorliegende Arbeit erscheint auch in der Zeitschrift: Beiträge zur Biologie der Pflanzen. Begründet von Prof. Dr. Ferd. Cohn, herausgegeben von Dr. Felix Rosen, Band XII, Heft 2"--T.p. verso.

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“The beaches on that coast I had come to visit are treacherous and sandy and the tides are always shifting things about among the mangrove roots…A world like that is not really natural…Parts of it are neither land nor sea and so everything is moving from one element to another, wearing uneasily the queer transitional bodies that life adopts in such places. Fish, some of them, come out and breathe air and sit about watching you. Plants take to eating insects, mammals go back to the water and grow elongate like fish, crabs climb trees. Nothing stays put where it began because everything is constantly climbing in, or climbing out, of its unstable environment.”
Fragments of the hypocotyls of the fossil Ceriops cantiensis Chandler from the Lower Tertiary of southern England and the living Ceriops tagal (Perr.) C.B. Rob. and Ceriops decandra (Griff.) Ding How have been examined by SEM. The living material has also been studied by light microscopy. Great similarity has been revealed between homologous tissues of the Recent and fossil material: the palisade-like epidermis; a two-zoned cortex composed of an outer region of compact collenchymatous tissue and an inner region of aerenchyma; phloem fibres; a large number of small vascular bundles, only some of which have xylem; few xylem elements; similarity of xylem elements; pith region of roundish to shortly oblong cells forming long, bead-like rows in longitudinal view. Evidence is also presented of similarity between Recent and fossil starch grains.
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