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Big Oak Tree

Gypsy moth (Lymantria dispar) on an apple tree closeup

Three Northern American Eastern Mountain Red Oak Quercus Rubra Acorns, Bright Sunny Yellow Green Autumnal Leaves, Large Detailed Horizontal Macro Closeup, Gentle Bokeh Background

An oak is a tree or shrub in the genus Quercus. Oaks have spirally arranged leaves, with lobate margins in many species; some have serrated leaves or entire leaves with smooth margins. The fruit is a nut called an acorn or oak nut borne in a cup-like structure known as a cupule; each acorn contains one seed (rarely two or three) and takes 6–18 months to mature, depending on their species.

Collection of oak leaves isolated on white background.

Sessile Oak (Quercus petraea) - Küre Mountains National Park

Bunch of Holm oak or Holly oak tree, branches dark glossy green spiked leafs with acorns or raw fruits isolated and die cut on white background with clipping path

Oak acorn in raindrops on blurred background in square frame.

Oak Tree

Bur Oak Acorn Cluster (Quercus macrocarpa) just starting to ripen. They were photographed in the â??sweet lightâ?? of the late afternoon sun.

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Single old oak tree in front of young barley field

Green acorns of Quercus berberidifolia on the tree

Green Acorn nut growing on branches on summer. Close-up of Quercus tree

Green acorns in the oak tree

The oak sprout in a flower pot closeup

Oak tree acorn in Termessos National Park

Green Leaves, isolated green leaf texture

Acorns of german oak tree

oak seedling plant with root isolated on white background

Oak branch with acorns and oak leaves isolated on white.

meteora monastery

Growing brown acorns on an oak branch. Seeds, fruits, nuts of a forest tree. Autumn. Oak acorn

A close up of white oak leaves in bright sunlight on a clear day in Summer

A tiny acorn growing on an oak tree in a forest.

oak isolated on white background

Acorns in a bunch on an oak tree in Central Florida with green and tan colors and blurred trees in the background

White Oak (Quercus alba) leaf isolated on white background.

$Acorns of northern red oak in midsummer, Connecticut. Acorns of this tree take two years to mature. Every two to five years, an oak may produce an exceptionally large number -- maybe 10,000 from a large tree. This is called a \$

Free Images: "bestof:NAS-019f Quercus nigra.png Histoire des arbres forestiers de l'Amérique septentrionale Quercus nigra - water oak <br>Original caption Quercus aquatica Water"

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NAS-019f Quercus nigra.png

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NAS-011f Quercus prinoides.png

NAS-016f Quercus incana.png

NAS-012f Quercus virginiana.png

NAS-017f Quercus pumila.png

NAS-020f Quercus marilandica.png

NAS-021f Quercus ilicifolia.png

NAS-012f Quercus virginiana acorn.png

NAS-016f Quercus incana acorn.png

NAS-017f Quercus pumila acorn.png

NAS-020f Quercus marilandica acorn.png

NAS-021f Quercus ilicifolia acorn.png

NAS-011f Quercus prinoides acorn.png

Oak in Sudermania 1988.jpg

Elfnäs Oak 2010 Ekerö.jpg

Alsnöhus Castle ruins beyond tree 2009 (1).jpg

Alsnöhus Castle ruins beyond tree 2009 (2).jpg

Kindred Spirit hybrid oak leaves.jpg

Kindred Spirit hybrid oak.jpg

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Kindred Spirit hybrid oak without leaves.jpg

Pieter Bruegel d. Ä. 033.jpg

Chi rho Basel MNMA Cl2350.jpg

Kyrgyz_Wedding_Rites._An_Elderly_Woman_Dies_WDL10894.png

Shamsher Bridge and Masjid, Kabul WDL11483.png

Quercus leucotrichophora (Serres de la Madone).jpg

Knopper gall on oak (Quercus robur) induced by Andricus quercuscalicis (gall wasp), Arnhem, the Netherlands.jpg

Knopper gall on oak (Quercus robur), induced by Andricus quercuscalicis (gall wasp), Arnhem, the Netherlands.jpg

Quercus rubra IP0905004.jpg

Bois de Vaires chêne.jpg

Quercus robur fastigiata (Rentilly).jpg

Chêne au bois de Vaires.jpg

NAS-010f Quercus muehlenbergii.png

NAS-009f Quercus montana.png

NAS-006f Quercus lyrata.png

NAS-003f Quercus macrocarpa.png

NAS-004f Quercus macrocarpa.png

NAS-014f Quercus phellos.png

NAS-015f Quercus imbricaria.png

NAS-005f Quercus stellata.png

NAS-007f Quercus bicolor.png

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