, Volume 17, Issue 4, pp 354–382 | Cite as

The role of 2-needle fascicles in the adaptation and evolution of ponderosa pine

  • J. R. Haller


Pacific Coast Mature Tree Young Tree Great Basin Grand Canyon 
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Copyright information

© The New York Botanical Garden 1965

Authors and Affiliations

  • J. R. Haller
    • 1
  1. 1.Department of Biological SciencesUniversity of CaliforniaSanta Barbara

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