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Rhyniophyta

The Columbia Encyclopedia, 6th ed. | 2008 | Copyright

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, 6th ed.. 2008. Encyclopedia.com. 9 Feb. 2012 <http://www.encyclopedia.com>.

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vascular plants

A Dictionary of Biology | 2004 | Copyright

vascular plants All plants possessing organized vascular tissue. See tracheophyte.

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"vascular plants." A Dictionary of Biology. 2004. Encyclopedia.com. 9 Feb. 2012 <http://www.encyclopedia.com>.

"vascular plants." A Dictionary of Biology. 2004. Encyclopedia.com. (February 9, 2012). http://www.encyclopedia.com/doc/1O6-vascularplants.html

"vascular plants." A Dictionary of Biology. 2004. Retrieved February 09, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-vascularplants.html

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vascular plants

A Dictionary of Earth Sciences | 1999 | | Copyright

vascular plants See TRACHEOPHYTA.

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AILSA ALLABY and MICHAEL ALLABY. "vascular plants." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 9 Feb. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "vascular plants." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 9, 2012). http://www.encyclopedia.com/doc/1O13-vascularplants.html

AILSA ALLABY and MICHAEL ALLABY. "vascular plants." A Dictionary of Earth Sciences. 1999. Retrieved February 09, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-vascularplants.html

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vascular plants

A Dictionary of Plant Sciences | 1998 | | Copyright

vascular plants See TRACHEOPHYTA.

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MICHAEL ALLABY. "vascular plants." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 9 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "vascular plants." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (February 9, 2012). http://www.encyclopedia.com/doc/1O7-vascularplants.html

MICHAEL ALLABY. "vascular plants." A Dictionary of Plant Sciences. 1998. Retrieved February 09, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-vascularplants.html

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