NCBG North Carolina Botanical Garden

One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them. - J.R.R. Tolkien

Botanical Glossary

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The outermost layer of a woody stem, usually with one or more corky layers that prevent water loss and protect the inner living tissues from mechanical damage.

Reference: modified from W&K, p. 587

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