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Picea glauca

White spruce

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Nom français: Épinette blanche

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LEAVES – 4-sided sharp needles, 1-2 cm long growing singly (not in bunches like the pines) from all sides of the twig.
TWIG – Glabrous (not hairy), as opposed to the black spruce.
BARK – Thin and scaly, gray, flaking off in small circular pieces of 5-10 cm.
CONES – Cylindrical, 3-6 cm long, color ranging from pale green to brown when mature. Scales are soft and flexible.

Spruces make the principal pulpwood supply of Canada. Black and white spruces grow over the entire country, reaching the limit of tree growth in the north. Typically, black spruce grows in swampy areas and white spruce at drier sites, but white spruce can grow on almost any kind of soil: from wet riversides to well-drained rocky slopes. Roots of both species can be used as rope or thread.

Can you tell the difference between a fir and a spruce? Try to roll a needle between your fingers. If it is 4-sided and it rolls, then it is a spruce. If it is flat and doesn’t roll, then it’s a fir. Well, it could be a fir… or a hemlock if the needles are short, or a yew if it is shrubby.

Fontes e Créditos

  1. (c) Shuk Han (Nancy) Mak, alguns direitos reservados (CC BY-NC), uploaded by Shuk Han (Nancy) Mak
  2. (c) Sten Porse, alguns direitos reservados (CC BY-SA), http://commons.wikimedia.org/wiki/File:Picea-glauca-needles.JPG
  3. (c) Rob Duval, alguns direitos reservados (CC BY-SA), http://commons.wikimedia.org/wiki/File:Picea_glauca-bark.jpg
  4. (c) Petr Filippov, alguns direitos reservados (CC BY-SA), http://commons.wikimedia.org/wiki/File:Picea_glauca_Brno3.JPG
  5. (c) Alice Roy-Bolduc, alguns direitos reservados (CC BY-SA)

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