An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Error message

Warning: Attempt to read property "lang" on string in SkosmosClient\Concept->getValueForLang() (line 430 of /app/drupal/agclass/vendor/dcameron/skosmos_client/src/Concept.php).

Concept Breadcrumbs

Preferred Term:

growth rings

The layer of wood growth put on a tree during a single growing season. In the temperate zone, the annual growth rings of many species (e.g., oaks and pines) are readily distinguished because of the differences in the cells formed during the early and late parts of the season. In some temperate zone species (e.g., black gum and sweetgum) and many tropical species, annual growth rings are not easily recognized.
Concept Schemes:
Broader Concept:
Narrower Concepts:
Entry Terms:
  • growth-rings
  • tree growth rings
  • tree rings
  • tree-rings
  • annual growth rings
  • annual rings
Download this Concept:
RDF/XMLCreated 2006-01-19, last modified 2018-03-07