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 alburnum.
Heartwood refers to the inner layer of a wood stem wholly composed of non-living cells. It is usually differentiated from the outer enveloping layer (sapwood) by its darker colour, and is more decay resistant than sapwood.
The inner core of a woody stem, where the cells no longer participate in the life processes of the tree. Usually contains extractive materials that give it a darker color and greater decay resistance than the outer enveloping layer (sapwood).
The inner of two distinct wood layers in the trunk of many trees. The outer layer, usually lighter and moister, called sapwood, is newly formed wood with some living cells. Inside this ring of sapwood is often a darker, harder, more durable core called heartwood. A striking example of heartwood and sapwood difference is found in Dalbergia melanoxylon, which has light brown sapwood and purple black heartwood; it is often used for craft carving. The wood in the centre of a tree, no longer in use for conducting water from the roots to the leaves. It is often darker in colour than the outer wood (sapwood) and may contain chemicals that make it more resistant to decay.
Heartwood is the xylem in the center of the tree that has stopped conducting water and minerals and is storing waste products from the plant. These waste products are of various types. In redwood trees these materials causes the heartwood to turn red. These products help to preserve the wood, particularly in redwoods. Heartwood can be contrasted with Sapwood, particularly in redwoods, because the heartwood is red and the sapwood is white. The sapwood is the portion of the xylem that is conducting water and minerals and hasn't started storing waste products. DIAGRAMS: Heartwood / Heartwood PHOTOS
In a cross section of a log, the heartwood is the centre and dead portion where growth rings appear. This area, between the pith and sapwood may contain phenolic compounds, gums, resins and other material that usually make it darker and more decay resistant than sapwood.
The older, harder wood in the middle of a tree trunk that can no longer transport water up to the leaves. This wood is often saturated with decay-protecting chemicals that also make it a different color from the outer wood. [KR
The wood extending from the true centre to the sapwood, and whose cells no longer participate in the life processes of the tree. Heartwood may contain gums, resins, and other materials that usually make it darker and more decay resistant than sapwood.
This term refers to the wood that surrounds the very center of the tree, called the pith, and which extends out to the living and growing wood on the outside of the tree called the sapwood. This wood is not alive and does not conduct water and nutrients; that function is performed by the sapwood. Heartwood is usually darker in color than is the sapwood.
the older, harder, nonliving central wood of a tree that has ceased to conduct sap and serves the sole function of support; heartwood is created as the sapwood moves farther away from the active growth region of the tree and dies; it usually is darker, denser, less permeable, and more durable than the surrounding sapwood.
The inner core of a tree trunk or stem that no longer conducts sap. Heartwood is not alive, but it does serve as a skeletal support for the living tree. Sometimes heartwood is decay and/or insect resistant.
This is the fully developed mature section in the centre of the tree. Due to the gum or resin contained in the wood cells it is usually darker in colour than sapwood. Its main function is to support the tree as it is inactive (ceased growing).
The portion of the tree contained within the sapwood; this term is sometimes used to mean the pith. The heartwood is dormant and unnecessary for the trees growth, but important to its stability. The living part of the tree is in its outer parts.
Wood toward the center of a stem or root that has become physiologically inactive. Heartwood is often darker than sapwood and often more resistant to decay. It no longer functions for the transport of water and nutrients, but may be a site for storage.
the older, harder, nonliving central portion of wood of some trees that is usually darker, denser, less permeable, and more durable than the surrounding sapwood; many trees do not form a true heartwood
The wood making up the centre part of the tree, beneath the sapwood. Cells of heartwood no longer participate in the life processes of the tree. Heartwood may contain phenolic compounds, gums, resins, and other materials that usually make it darker and more decay resistant than sapwood
The dense and often dark-coloured wood that lies in the inner part of the trunk or branch that is devoid of living cells. Toxic waste materials are usually deposited in the heartwood giving it durable qualities.
Heartwood is the older, harder central portion of the tree. It usually contains deposits of various materials that frequently give it a darker color than sapwood. It is denser, less permeable and more durable than the surrounding sapwood.
The wood of a tree that reaches from the pith (the soft core or center) to the sapwood (where cells have hardened). This wood may contain phenoloic compounds, gums, resins, etc. making it darker and more decay resistant. Redwood is an example of a wood that is used specifically for its durable qualities.