sapwood

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sapwood

sapwood relatively thin, youngest, outer part of the woody stem of a tree, the part that conducts water and dissolved materials. In the cross section of a tree, the sapwood is recognizable by its texture and color; it is softer and lighter than the inner heartwood . As the tree grows in diameter, the innermost layers of sapwood become heartwood, and new sapwood is produced on the outside of the woody column. See wood .

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"sapwood." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 15 Nov. 2009 <http://www.encyclopedia.com>.

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sapwood

A Dictionary of Biology | 2004 | Â© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. (Hide copyright information) Copyright

sapwood (alburnum) The outer wood of a tree trunk or branch. It consists of living xylem cells, which both conduct water and provide structural support. Compare heartwood.

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A Dictionary of Plant Sciences | 1998 | | Â© A Dictionary of Plant Sciences 1998, originally published by Oxford University Press 1998. (Hide copyright information) Copyright

sapwood The active xylem cells, which are peripheral to the dead, woody centre of the trunks of trees. This part of the xylem is distinguished easily from the central heartwood by its colour.

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MICHAEL ALLABY. "sapwood." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 15 Nov. 2009 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "sapwood." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (November 15, 2009). http://www.encyclopedia.com/doc/1O7-sapwood.html

MICHAEL ALLABY. "sapwood." A Dictionary of Plant Sciences. 1998. Retrieved November 15, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-sapwood.html

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