Sentence Examples


  • All sides the islands are surrounded by a broad belt of kelp, the gigantic southern seaweed (Macrocystis pyrifera), through which a boat may approach the rocky shores even in stormy weather.
  • Among the marine productions on the southern coast, a species of kelp, Macrocystis pyrifera, merits special mention because of its extraordinary length, its habit of clinging to the rocks in strong currents and turbulent seas, and its being a shelter for innumerable species of marine animals.
  • In Nereocystis and Macrocystis a zone of tubes occurs, which present the appearance of sieve-tubes even to the eventual obliteration of the perforations by a callus.
  • In Fucus vesiculosus they arise in lateral pairs; in Ascophyllum they are single and median; in Macrocystis one vesicle arises at the base of each thallus segment; in Sargassum and Halidrys the vesicles arise on special branches.
  • Macrocystis sp., tubular elements from the medulla, with sieve-like transverse walls.
 

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