White Oak
(Fagaceae Quercus alba)
Adopted in 1941.
In 1941, Maryland
designated the White Oak,
Fagaceae Quercus alba,
as the Tree (Chapter 731,
Acts of 1941; Code State
Government Article, sec.
13-310).
Handsome and sturdy, the
white oak is named for its
whitish bark and grey twigs.
White Oaks are large,
long-lived, and slow-growing
trees, reaching heights of
60 to 150 feet, with
diameters between 3 to 4
feet. Their glossy, bright
green leaves have rounded
lobes, five to seven per
leaf. The species is found
commonly throughout
Maryland.
White oak (Quercus alba)
is an outstanding tree among
all trees and is widespread
across eastern North
America. The most important
lumber tree of the white oak
group, growth is good on all
but the driest shallow
soils. Its high-grade wood
is useful for many things,
an important one being
staves for barrels, hence
the name stave oak. The
acorns are an important food
for many kinds of wildlife.
Description:
- Leaf:
Alternate, simple,
oblong to ovate in
shape, pinnately veined
with an evenly lobed
margin, 4 to 7 inches
long. The apex is
rounded and the base is
wedge-shaped. Leaves are
hairless, bright green
above and whitish below.
- Flower: Male
flowers are green, borne
in naked catkins, 2 to 4
inches long. Female
flowers are reddish and
appear as single spikes.
Appearing with the
leaves.
- Fruit: Ovoid,
but may be oblong, with
a warty cap that covers
1/4 of the fruit. The
cap always detaches at
maturity. Matures in one
year, ripens 120 days
after pollination (July
to September).
- Twig:
Red-brown to somewhat
gray, hairless, with
red-brown multiple
terminal buds that are
small, rounded and
hairless. Twigs are
often shiny or somewhat
glaucous.
- Bark: Whitish
or ashy gray, varying
from scaly to
irregularly platy or
blocky. On older trees
smooth patches are not
uncommon.
- Form: A large
tree; when open grown,
white oaks have rugged,
irregular crowns that
are wide spreading, with
a stocky bole. In the
forest crowns are
upright and oval.
Taxonomic
Hierarchy
|
|
Kingdom |
Plantae --
Plants |
|
Subkingdom |
Tracheobionta --
Vascular plants |
|
Superdivision |
Spermatophyta –
Seed plants |
|
Division |
Magnoliophyta –
Flowering plants |
|
Class |
Magnoliopsida –
Dicotyledons |
|
Subclass |
Hamamelidae – |
|
Order |
Fagales – |
|
Family |
Fagaceae
– Beech family |
|
Genus |
Quercus
L. – oak |
|
Species |
Quercus alba
L. – white oak |
Source:
Dendrology at
Virginia Tech
U.S. Department of
Agriculture
|