Quercus mongolica subsp. crispula (Mongolian oak)
Other names: Quercus mongolica var. grosseserrata
Q. mongolica subsp. crispula is a spreading, deciduous tree with rough, black-brown bark and narrowly oblong to narrowly ovate, dark green leaves with rounded lobes. Catkins of insignificant, yellow-green or dull red flowers in late spring and early summer are followed by ovoid, pale brown acorns with scaly, thick caps.
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16.5m max. spread |
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18m max. height |
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50-100 years to maturity |
Quercus incana (Bluejack oak )
Other names: Upland willow oak, Sandjack oak, Cinnamon oak, Quercus cinerea, Shin oak, Quercus phellos var. latifolia
Q. incana is a thicket-forming, deciduous shrub or tree with an irregular crown and narrowly ovate to narrowly elliptic, blue-green leaves, grey-green beneath. Yellow-green male catkins and female catkins in spring are followed by spherical, brown acorns taking two years to mature.
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10.5m max. spread |
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12m max. height |
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50-100 years to maturity |
Quercus bicolor (Swamp white oak)
Q. bicolor is a spreading, deciduous tree with peeling, fissured, grey-brown bark and oblong to ovate, shallowly lobed, glossy, dark green leaves, white-hairy beneath when young and yellow in autumn. Oblong to ovoid acorns are enclosed by one-third in rounded caps with hairy scales.
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15m max. spread |
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20m max. height |
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20-40 years to maturity |
Quercus acutissima (Sawtooth oak)
Other names: Sawthorn oak, Japanese silkworm oak
Q. acutissima is a rounded, deciduous tree with fissured, corky, grey to black bark and ovate to lance-shaped, glossy, mid-green leaves with bristle-tipped teeth. Ovoid acorns are borne in cups covered with long, slender, hairy scales.
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20m max. spread |
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20m max. height |
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20-50 years to maturity |
Other names: American red oak
Q. rubra is a large, broad, deciduous tree with deep green leaves in summer and red autumn colour. It has red-brown fruits called acorns.
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20m max. spread |
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25m max. height |
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20-40 years to maturity |
Q. phellos is a large deciduous tree forming a dense oblong crown of simple long leaves and inconspicuous yellow-green catkins in spring followed by small acorns.
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12m max. spread |
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15m max. height |
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20-50 years to maturity |
Quercus prinoides (Dwarf chinkapin oak)
Other names: Dwarf chinquapin oak, Dwarf chestnut oak, Scrub chestnut oak
Q. prinoides is a spreading, deciduous shrub or small tree with leathery, oblong to lance-shaped, toothed or shallowly lobed, glossy, dark green leaves, pale green beneath. Solitary or paired, oblong to ovoid, green acorns, with a cup enclosing about half, ripen dark brown in autumn.
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6m max. spread |
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6m max. height |
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50-100 years to maturity |
Other names: Sacramento white oak, Californian oak, California white oak, Roble
Q. lobata is a spreading, deciduous tree with deeply furrowed, grey to brown bark, oblong to ovate, velvety, dark green leaves divided into eleven rounded lobes, and ovoid, sweet, edible, dark brown acorns.
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15m max. spread |
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25m max. height |
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50-100 years to maturity |
Other names: Truffle oak, Nepal oak
Q. pubescens is a spreading, deciduous tree with deeply grooved, grey to black bark and densely hairy shoots bearing oblong to ovate, grey-green leaves, hairy beneath, with rounded lobes ending in pointed teeth. Clusters or catkins of insignificant flowers in spring are followed by ovoid acorns with scaly cups.
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15m max. spread |
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20m max. height |
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20-50 years to maturity |
Other names: Iron oak, Bitter oak, Manna oak, Mossy-cupped oak, Wainscot oak
Q. cerris is a variable, fast-growing, spreading, deciduous tree with plated, dark grey bark and oblong to lance-shaped, deeply lobed or toothed, dark green leaves, pale green beneath, turning yellow-brown in autumn. Clusters or catkins of inconspicuous, yellow-green flowers in spring are followed by acorns with bristly cups.
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25m max. spread |
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30m max. height |
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20-50 years to maturity |
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