Walnut bark. Cross section through the trunk of a walnut tree (Juglans regia) revealing the pattern in its bark (dark brown). This pattern is known as

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Walnut bark. Cross section through the trunk of a walnut tree (Juglans regia) revealing the pattern in its bark (dark brown). This pattern is known as a rhytidome. The rhytidome is composed of alternate layers of cork cells and dead cortical cells. Cork cells are produced in the stem by a layer of meristemetic cells (phellogen). Trees usually have one layer of phellogen, but in walnut there are several, which causes the pattern seen here.

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Size: 3500px × 5249px
Photo credit: © DR KEITH WHEELER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: bark, biological, biology, botanical, botany, cabinet-making, cells, close-, cork, cortical, cross-section, detail, flora, grain, juglans, layers, nature, pattern, phellogen, plant, plants, regia, rhytidome, scale, sectioned, shell, slice, trunk, walnut, wood, woodworking