Cut of a heartwood tree trunk.

Heartwood section diagram edited.gif 376 × 305 pixels

Wood, Tribe, Cut, Brown, Heartwood, tree ring, textured free image

Cross section of a tree - Tree Growth and Structure

Heartwood, Sapwood, Xylem

Cut of a heartwood tree trunk.

Anatomy of Wood - Woodcarving Illustrated

Tree Trunk Anatomy: Heartwood, Sapwood, Bark

Stratigraphic column of the Tunka rift basin (after Logachev, 1974 and

Forests, Free Full-Text