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Quercus rubra

Red oak

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Nom français: Chêne rouge

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LEAVES – Alternate, simple leaves, dark and shiny, with 7-9 pointy lobes.
BARK – Smooth and green-brown on young trees, becoming darker and fissuring into wide ridges with shallow cracks on older trees. Inner bark is pinkish; the colour can sometimes be distinguished through the ridges.
FRUITS – Acorns, with a flat shallow hat. The acorns require two seasons to develop, they mature in about 18 months after pollination. They are very rich in tanins which gives them a bitter taste, but are nonetheless readily eaten by rodents.
TWIGS – Smooth, dark red to brown. Winter buds are small (6mm) and pointy, with many dark reddish brown scales.

Red oak grows rapidly and is tolerant to many soils, though it prefers well-drained soils. Found on sandy and rocky terrains, sometimes in open fields, but also in rich woods and floodplains.
Scatter-hoarders such as the gray squirrel are particularly important dispersal agents for the read oak. They can bury up to 1 out of 5 (20%) of the available acorns… and fail to recover many of them over the winter!

Fontes e Créditos

  1. (c) Bruce Kirchoff, alguns direitos reservados (CC BY), http://commons.wikimedia.org/wiki/File:Quercus_rubra_(23557091823).jpg
  2. (c) Bruce Kirchoff, alguns direitos reservados (CC BY), http://commons.wikimedia.org/wiki/File:Quercus_rubra_(23571535243).jpg
  3. (c) Bruce Kirchoff, alguns direitos reservados (CC BY), http://commons.wikimedia.org/wiki/File:Quercus_rubra_(23888704340).jpg
  4. (c) Bruce Kirchoff, alguns direitos reservados (CC BY), http://commons.wikimedia.org/wiki/File:Quercus_rubra_(23889942620).jpg
  5. (c) Alice Roy-Bolduc, alguns direitos reservados (CC BY-SA)

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