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Stem of old man's beard

Stem of old man's beard

B725/0323

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Credit

DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY

Caption

Stem of old man's beard. Light micrograph through the cross section of the stem of old man beard (Clematis vitalba, family Ranunculaceae), showing the large wood vessels called the xylem (inner ring) through which water is transported. Medullary rays are continuous through the xylemeven after secondary thickening.

Release details

Model release not required. Property release not required.

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