1911 Encyclopædia Britannica/Alburnum
ALBURNUM (sapwood), the outermost and youngest part of the wood of a tree, through which the sap rises. It is distinguished from the harder inner and older wood, the duramen or heart-wood.
See also Sapwood on Wikipedia; and our 1911 Encyclopædia Britannica disclaimer.
ALBURNUM (sapwood), the outermost and youngest part of the wood of a tree, through which the sap rises. It is distinguished from the harder inner and older wood, the duramen or heart-wood.