. Dansk botanisk arkiv. Plants; Plants -- Denmark. s Dansk Botanisk Arkiv, Bd. 2. Nr. 8. while at low water the trees stand with their trunks and bases exposed to the sun, and the sea bottom is laid bare for wide distances. In Rhizophora and Ceriops the arched aerial roots from the branches make, together with the stems, the whole scrub an inextricable confusion of grey stems, while as regards Avicennia the sea bottom is covered by its numerous small vertical asparagus- like aerial roots. The two photos (Plate I, Figs. 2—3) from Port Hedland were taken from just the same spot, with an interwal
. Dansk botanisk arkiv. Plants; Plants -- Denmark. s Dansk Botanisk Arkiv, Bd. 2. Nr. 8. while at low water the trees stand with their trunks and bases exposed to the sun, and the sea bottom is laid bare for wide distances. In Rhizophora and Ceriops the arched aerial roots from the branches make, together with the stems, the whole scrub an inextricable confusion of grey stems, while as regards Avicennia the sea bottom is covered by its numerous small vertical asparagus- like aerial roots. The two photos (Plate I, Figs. 2—3) from Port Hedland were taken from just the same spot, with an interwal. Fig. 3. The steamer at low water leaning against the logs of the jetty at Derby. The sea has retired farther out than the steamer which stands on the naked sea-bottom (Nov. 7. 1914). Photo, by C. H. O. of 6 hours, and show low Avicennia at high water standing in water until the crown, and at low water growing on the dry sea- bottom. (In some depressions water was left by the retiring tide and gives the impression that the bottom is not quite deprived of water). The tides run with great force (10—12 knots at some places) and only such well fastened plants as the mangrove trees are able to stand it; therefore we do not find much vegetation between their roots. Usually the soil is quite bare, hardly any sea-weeds and no sea-grasses1 being found. It was an exception to find the green carpet of the Suæda mentioned above, and this was only near the high water mark, where, probably, not every high water ] Compare: The Sea-Grasses of W. A., in Contr. to W. A. Botany I, p. 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 Dansk botanisk forening. Kbenhavn : Dansk botanisk forening
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Keywords: ., bookcentury1900, bookcollectio, bookdecade1910, booksubjectplants
