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jack pine

noun
1.
a scrubby pine, Pinus banksiana, growing on tracts of poor, rocky land in Canada and the northern U.S., bearing short needles and curved cones.
Also called gray pine.
Origin
1880-1885
1880-85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for jack pine
  • Wooded parts of the natural area include alder forest and jack pine, oak and red maple barrens.
  • The jack pine is unique because its resinous cones open and release seeds during a fire or from an intense, hot sun.
  • The driest jack pine-northern pin oak barrens did not change significantly after logging.
  • Fire opens the cones of the jack pine, spreading new seeds.
  • Fire was important on the jack pine plains and in the red pine-white pine forests.
  • jack pine remains on the outwash plains along with northern pin oak.
  • Most of the comments refer to the jack pine barrens found on similar sites in the north.
  • White and red pine forests largely dominated the vegetation, with some smaller pockets of jack pine.
  • They prefer early successional stands within jack pine forests.
  • As fires became less common, oak and jack pine slowly began to shade out the barrens.
British Dictionary definitions for jack pine

jack pine

noun
1.
a coniferous tree, Pinus banksiana, of North America, having paired needle-like leaves and small cones that remain on the branches for many years: family Pinaceae
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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