DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY
Kashmir birch bark. Macrophotograph of the inner surface of the bark of the Kashmir birch tree (Betula jacquemontiana). The oval beige areas are lenticels, which allow the inner parts of the trunk to breathe through the bark. Magnification: x1.4 at 35mm size.
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