Scientific Name:
Quercus macrocarpa
Pronunciation:
KWURK-us mack-roe-KAR-puh
Common Name:
bur oak
Family Name:
Fagaceae
Plant Type:
Tree - deciduous
Key ID Features:
Loose, open oak tree; leaves alternate, most obovate-oblanceolate, 14-20(-25)cm long x 8-12cm wide, dull, margins variable but most with rounded lobes, base taper toward the petiole. Winter ID: older twigs may have corky ridges; stipules may be persistent, 7-12mm long x 1mm wide; multiple ovoid terminal buds; lateral buds rounded, may be fuzzy; leaf sars mostly half-circle with scattered bundle scars.
Quite stout, yellow-brown, often with corky ridges; multiple terminal buds are small, round, and may be somewhat pubescent often surrounded by thread-like stipules; laterals are similar, but smaller.
Habit:
Spreading, Twiggy
Form:
Oval - vertical
Texture:
Medium - coarse
Mature Height:
10 - 15m
Mature Spread:
10 - 15m
Growth Rate:
Slow
Origin:
Canada - eastern, U.S. - northeast
Hardiness Rating:
Zone 2: (-46 to -40 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Alkaline, Humus rich
Water Use:
Low
Landscape Uses:
Screening, Shade tree, Street (boulevard tree), Tall background, Wildlife food, Woodland margin
Additional Info:
Leaf Morphology:
Form:
Simple, Lobed
Arrangement:
Alternate
Texture/Venation:
Leathery, Pinnate venation
Surfaces:
Colour in Fall:
Yellow, Red
Shapes:
Oblanceolate, Obovate
Apices:
Rounded
Bases:
Acute, Cuneate
Margins:
Pinnately lobed
Inflorescence Type:
Catkin (ament)
Flower Morphology:
Monoecious plant
Number Of Petals:
0
Ovary Position:
Inferior
Colour (petals):
Not showy, Green
Flower Time at Peak:
Apr
Fruit Type:
Nut
Fruit Colour:
Brown
Fruiting Time:
Sep, Oct
Additional Info:
Showy,
Bark Morphology:
Deeply fissured
Bark or Stem Colour:
Grey
Leaf Bud Type:
Ovoid, Rounded or globular
Leaf Scar Shape:
Half-round
Organ Modifications:
Ectomycorrhizae, Ribbed stems, Stipule, leafy
Propagation:
Seed
Maintenance:
Low
Pest Susceptibility:
(Pest resistant, Disease resistant, Drought tolerant)
