Annual ring

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annual ring (growth ring)

  • 年輪(日本語)
  • (Español)

Definition

Glossary of Plant Systematics (1st ed.) by Simpson (2006)

  • (as annual ring) The accumulation of secondary xylem (or phloem) over a single growing season, being evident because of the structural difference between the last cells of the summer wood and the first cells of the subsequent spring wood.

Glossary of "Evolution of Plants (2nd ed.)" by Willis & McElwain (2014)

  • (as growth ring) Rings in the cross section of woody stems that usually represent the xylem formed in one year of growth.

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