The center portion of a tree consisting of mature wood that has stopped growing Generally distinguishable from sapwood or the growing outer portion by its dark color
The inner core of a woody stem, wholly composed of nonliving cells and usually differentiated from the outer enveloping layer (sapwood) by its darker color
The inner core of a woody stem composed of nonliving cells and usually differentiated from the outer wood layer (sapwood) by its darker color See Cambium
The hard, central part of the trunk of a tree, consisting of the old and matured wood, and usually differing in color from the outer layers It is technically known as duramen, and distinguished from the softer sapwood or ausuruum It supports the tree as a structure but has no role in the trees growth
The more durable wood (although this varies according to age and type) from the centre of the tree The dead wood as opposed to the sapwood, which is the growing wood close to the bark of the tree and which carries the sap
the inner core of a woody stem composed of nonliving cells and usually differentiated from the outer wood layer (sapwood) by its darker colour See Cambium
the dark, inner region of wood Heartwood is dead wood that used to be living sapwood Its main job is to provide support to a tree, but the chemicals that accumulate in it help protect wood from insect attacks and decay
In wood anatomy, the inner layers of wood which in the growing tree, have ceased to contain living cells and in which the reserve materials e g , starch, have been removed or converted into heartwood substances It is generally darker in color than sapwood though not always clearly differentiated
The inner core of a woody stem or log, extending from the pith to the sap, which is usually darker in color This part of the wood contains dead cells which no longer participate in the life processes of the tree
Dead, central wood of trees. Its cells usually contain tannins or other substances that make it dark and sometimes fragrant. Heartwood is mechanically strong, resistant to decay, and less easily penetrated by wood-preservative chemicals than other types of wood. One or more layers of living and functional sapwood cells are periodically converted to heartwood