Oak Fact Sheet
Family: Fagaceae - Beech family
Latin name: Quercus alba
Common name: White oak
White oak has been the state tree of Illinois since
1973. The pictures above show the winter, summer and spring habits of a Quercus alba
located by Parking 20. This tree has been cut down.
- In the fourth picture, which is the same tree as the pictures
above, the White oak appears to have a lot of white
flowers, but that would be strange since the White
oak DOESN'T have white flowers. Look at the fifth photo
to solve the mystery.
- The white objects on the tree are actually newly emerged
leaves. Flowers are present in the spring. In this
photo of a white oak you can see the male flowers which
are green, drooping catkins.
- There are two pictures
that show the end of a branch on a White oak taken on April 13, 2004 and April 21, 2004.
These pictures are of the same branch. The White Oak is monoecious with
pendulous male catkins that emerge at the same time as the leaves. There are
also small female flowers on each tree, but I do not seem to have any
photographs of female flowers.
are deeply lobed and dark and glossy in appearance.
The fall colors of the Quercus alba can be stunning,
with leaves turning orange and red. They will eventually
turn brown and may remain on the tree all winter.
acorns appear above the leaves and may be in rather
large clusters. Acorns
of the White oak require only 1 season to mature. In mid July, the caps cover
nearly the entire acorn. My mid August, the cap covers less than half of the
acorn. By early October, most of the acorns will be on the ground. In most
cases, the cap will have separated from the rest of acorn, but in cases where
they are still together, the cap will cover 1/3 or less of the acorn.
Karren Wcisel © copyright
Send email to Karrenw@aol.com
Please ask for permission before using my photographs. Larger sizes and additional photographs
of the tree are often available.
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