December Color Appears at the Washington Park Arboretum (Part II)

December 16th, 2013 by Pat Chinn-Sloan

Selected cuttings from the Washington Park Arboretum (December 9 - 23, 2013)

Selected cuttings from the Washington Park Arboretum (December 9 – 23, 2013)

1)   Abies balsamea   (Balsam fir)

  • Pitch from almost every conifer is used to seal and protect wood.
  • “Canada Balsam” from the Balsam Fir is used to cement together the lens elements in optical equipment and to mount specimens for microscopy.
  • It is North America’s most popular Christmas tree, but only newly planted in the Arboretum in grid 42-4W.
  • Native to eastern North America

2)   Cedrus libani   (Cedar of Lebanon)

  • “Cedar oil” is distilled from several conifers, mostly not Cedrus, the “true cedar”.
  • Cedar oil has insecticidal properties, was used in ancient embalming, and is currently used as immersion oil in microscopy and to mask surface flaws in emeralds.
  • Several of our true cedars – Cedar of Lebanon, Atlas Cedar, and Deodar Cedar are located along the Lynn Street entrance, west of the Wilcox foot bridge.

3)   Picea sitchensis   (Sitka spruce)

  • Before the introduction of chicle, North Americans (both natives and immigrants) chewed spruce gum.
  • Spruce roots are used for stitching bark canoes and weaving hats and baskets.
  • The famous “Spruce Goose” was not spruce but acquired its alliterative sobriquet because early airplane builders valued spruce’s high strength-to-weight ratio.
  • Our best Sitka spruce is in 15-B on Azalea Way.

4)   Pinus monticola   (Western white pine)

  • The Lower Kootenay Band of the Ktunaxa Nation made bark canoes from white pine bark.   See the website: sturgeon-nose-creations.com
  • Industrially, pine extracts make pine tar, turpentine, pitch, and rosin for violin bows, ballet shoes, baseball bats, and soldering flux.
  • Pinus monticola is in the Pinetum in grid 35-6W.

5)   Quercus suber   (Cork oak)

  • Quercus = oak, suber = cork. Location: Rock Roses on Arboretum Drive.
  • Any questions?
Share

Tags: ,

Comments are closed.