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  2. Quercus acutissima - Wikipedia

    en.wikipedia.org/wiki/Quercus_acutissima

    The flowers are wind-pollinated catkins. The fruit is an acorn , maturing about 18 months after pollination, 2–3 cm ( 3 ⁄ 4 – 1 + 1 ⁄ 4 in) long and 2 cm broad, bi-coloured with an orange basal half grading to a green-brown tip; the acorn cap is 1.5–2 cm ( 5 ⁄ 8 – 3 ⁄ 4 in) deep, densely covered in soft 4–8 millimetres ( 3 ...

  3. Quercus havardii - Wikipedia

    en.wikipedia.org/wiki/Quercus_havardii

    Quercus havardii (common names include shinnery oak, shin oak and Havard oak) is a deciduous, low-growing, thicket-forming shrub that occupies some two million to three million hectares (7,700 to 11,600 square miles) in the southern Great Plains of North America. [2]

  4. Oak - Wikipedia

    en.wikipedia.org/wiki/Oak

    In spring, a single oak tree produces both staminate ('male') flowers in the form of catkins, and small pistillate ('female') flowers, [4] meaning that the trees are monoecious. The fruit is a nut called an acorn , borne in a cup-like structure known as a cupule ; each acorn usually contains one seed and takes 6–18 months to mature, depending ...

  5. Quercus libani - Wikipedia

    en.wikipedia.org/wiki/Quercus_libani

    The flowers are monoecious, meaning that flowers from both sexes can be found on the same tree. They are pollinated by wind. The tree produces acorns that grow to about 2 to 3.6 centimetres (3 ⁄ 4 to 1 + 3 ⁄ 8 inches) in diameter. [4] Its length is half covered by the cupule. [5] Quercus libani leaves. Lebanon oak's green acorns with spiny ...

  6. Quercus michauxii - Wikipedia

    en.wikipedia.org/wiki/Quercus_michauxii

    Quercus michauxii, the swamp chestnut oak, is a species of oak in the white oak section Quercus section Quercus in the beech family. It is native to bottomlands and wetlands in the southeastern and midwestern United States, in coastal states from New Jersey to Texas, inland primarily in the Mississippi–Ohio Valley as far as Oklahoma, Missouri, Illinois, and Indiana.

  7. Quercus palustris - Wikipedia

    en.wikipedia.org/wiki/Quercus_palustris

    Quercus palustris, also called pin oak, [4] swamp oak, or Spanish oak, [5] is a tree in the red oak section (Quercus sect. Lobatae) of the genus Quercus.Pin oak is one of the most commonly used landscaping oaks in its native range due to its ease of transplant, relatively fast growth, and pollution tolerance.

  8. Quercus variabilis - Wikipedia

    en.wikipedia.org/wiki/Quercus_variabilis

    The flowers are wind-pollinated catkins produced in mid spring, maturing about 18 months after pollination; the fruit is a globose acorn, 1.5–2 cm (5 ⁄ 8 – 3 ⁄ 4 in) diameter, two-thirds enclosed in the acorn cup, which is densely covered in soft 4–8 millimetres (3 ⁄ 16 – 5 ⁄ 16 in) long 'mossy' bristles. [3] [4]

  9. Quercus robur - Wikipedia

    en.wikipedia.org/wiki/Quercus_robur

    Quercus robur, the pedunculate oak or English oak, [3] [4] is a species of flowering plant in the beech and oak family, Fagaceae. It is a large tree, native to most of Europe and western Asia , and is widely cultivated in other temperate regions.

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