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fallen oak leaf isolated on white
Gypsy moth (Lymantria dispar) on an apple tree closeup
Oak leaf with galls of Gall wasp, close-up.
Green acorns in the oak tree
Oak Leaf
Leaves of holm oak on a white background
Aglaomorpha quercifolia is used in Ayurvedic medicine and other sytems of medicine.
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.
green oak acorns. oak acorns on a branch
close-up oak leaf
Valley oak leaf,
green leaves eaten by pest caterpillars isolated white background
giant prickly stick  insect isolated on white background
herba epimedii, epimedium, Aceranthus sagittatus S. et Z.
Oak canopy on a white background
Fallen oak leaves in autumn.
Gall of Elm-currant aphid (Eriosoma ulmi) on green leaf of Ulmus glabra or Wych elm
Quercus durata, the California scrub oak, or leather oak, is an oak endemic to California.  Acorn.  Fagaceae.
Leaf i found with some interesting creatures on the underside.
Macro shot of leaf in forest
A closeup shot of a rusty and dried autumn leaf isolated on the white background
A single oak leaf, a natural tree growth, isolated on a white background with a soft shadow for dimension.
Detail of the leaves of the water oak (Quercus nigra), a native tree of the USA
curled wood chips with green oak leaves on white background with copy space for design.
Close-up of large Galls on Common oak leaves created by gall wasp Cynips quercusfolii in Estonian boreal forest
Sessile Oak (Quercus petraea) - Küre Mountains National Park
closeup showing a plant gall on a green leaf in sunny ambiance
A tiny acorn growing on an oak tree in a forest.
Young green pearls on an oak branch
The Valley Oak, can sometimes be riddled with large  growths along the stem.   Small wasps produce these oak apples or galls. The large oak apples, are induced by the gallwasp Andricus californicus.  Shollenberger Park; Petaluma Wetlands; Petaluma; Sonoma County; California. Quercus lobata.
Free Images: "bestof:Caloptilia alchimiella oak leaves rolled into a conical form by the larva.JPG en Stainton �s Natural History of the Tineina 1855 �1873 Caloptilia alchimiella"
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Caloptilia_alchimiella_oak_leaves_rolled_into_a_conical_form_by_the_larva.JPG
Caloptilia_alchimiella_larva.JPG
Caloptilia_alchimiella_ill.JPG
Caloptilia_hemidactylella_rolled_leaf.JPG
Caloptilia_stigmatella_sallow_leaf_rolled_into_a_cone_by_the_larva.JPG
Caloptilia_semifascia_leaf_of_maple,_with_a_portion_rolled_into_a_cone_by_the_larva.JPG
Caloptilia_syringella_larva.JPG
Caloptilia_hemidactylella_larva.JPG
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Caloptilia_semifascia_larva.JPG
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Caloptilia_syringella_mine_and_roll.JPG
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Dichomeris_derasella_a_sprig_of_sloe_with_leaves_rolled_up_by_larva.JPG
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Elachista_albifrontella_larva.JPG
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Coleophora_currucipennella_oak_leaf_eaten_by_the_larva.JPG
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Euspilapteryx_auroguttella_a_sprig_of_Hypericum_with_leaves_mined_and_rolled_into_cones.JPG
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Syncopacma_coronillella_a_sprig_of_Coronilla_varia_with_leaves_united_by_larva.JPG
Ypsolopha_ustella_two_leaves_of_hornbeam_fastened_together_by_larva.JPG
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Coleophora_ibipennella_birch_leaves_eaten_by_the_larva,_with_two_cases_attached.JPG
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Coleophora_auricella_sprig_of_Stachys_recta_with_mined_leaves_and_several_larva-cases_attached.JPG
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Coleophora_chalcogrammella_sprig_of_Cerastium_arvense_with_mined_leaves_and_a_larva-case_attached.JPG
Coleophora_vitisella_sprig_of_Vaccinium_vitis-idaea_with_mined_leaves_and_a_larva-case_attached.JPG
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Syncopacma_albipalpella_a_sprig_of_Genista_anglica_with_leaves_spun_together_and_discoloured_by_larva.JPG
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Phyllonorycter_stettinensis_larva.JPG
Phyllonorycter_schreberella_larva.JPG
Phyllonorycter_rajella_larva.JPG
Phyllonorycter_junoniella_larva.JPG
Phyllonorycter_lantanella_larva.JPG
Phyllonorycter_nigrescentella_larva.JPG
Phyllonorycter_mespilella_larva.JPG
Phyllonorycter_spinicolella_larva.JPG
Phyllonorycter_corylifoliella_larva.JPG
Phyllonorycter_coryli_larva.JPG
Phyllonorycter_quinnata_larva.JPG
Phyllonorycter_viminetorum_larva.JPG
Phyllonorycter_salicicolella_larva.JPG
Phyllonorycter_salictella_larva.JPG
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