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<a href="http://www.encyclopedia.com/doc/1E1-Rhynioph.html" title="Facts and information about Rhyniophyta">Rhyniophyta</a>
Rhyniophyta , division of plants known only from fossils, of which the genus Rhynia was perhaps the most important. These plants date from the Silurian and Devonian age. Relatively simple in structure, they resemble the Psilotophyta in many features, such as the lack of clearly developed roots. Like modern higher plants the Rhyniophyta had the specialized conducting tissues xylem and phloem. The Rhyniophyta are the most primitive group of vascular plants so far known and appear to be ancestral to most of the major divisions of vascular plants.
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"Rhyniophyta." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 10 Feb. 2010 <http://www.encyclopedia.com>.
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"Rhyniophyta." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved February 10, 2010 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-Rhynioph.html
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Rhyniophyta
Book article from: The Columbia Encyclopedia, Sixth Edition Rhyniophyta , division of plants known only from fossils...developed roots. Like modern higher plants the Rhyniophyta had the specialized conducting tissues xylem and phloem. The Rhyniophyta are the most primitive group of vascular plants... |
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plant
Book article from: The Columbia Encyclopedia, Sixth Edition ...the Lycopodiophyta (club mosses); and the Equisetophyta (horsetails). All the plants of a fourth subdivision, the Rhyniophyta , are extinct. The remaining divisions include the dominant vegetation of the earth today: the ferns (see Polypodiophyta... |
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Bryophyta
Book article from: The Columbia Encyclopedia, Sixth Edition ...most prominent. It is now believed that the bryophytes descended from green algae by way of now extinct ancestors (the Rhyniophyta ). The bryophytes are important because they are pioneer plants and soil builders on surfaces lacking other vegetation... |
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