Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
Oak leaf with galls of Gall wasp, close-up.
oak apple gall from an Oregon Oak that was induced by the California gallfly Andricus californicus, Andricus quercuscalifornicus.
Oak galls, ink nuts on oak. Cynips quercusfolii
Close up of apple oak gall growing on valley oak, Quercus lobata, in California. Growth of gall is induced by a wasp larva inside the gall.
A group of three Oak Galls, or Oak Apples, on a small young oak tree. Taken in a woodland in West Yorkshire, UK, with a Canon EOS 700d digital camera.
Acorn on the tree
Oak galls on an oak leaf close-up
Colorful autumn leaves.
Oak Apple Gall Wasp growth on the top portion of a young oak sapling.
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.
Tree infection. Close up.
Space for text
Galls on an oak tree in spring
Oak tree acorn in Termessos National Park
Horse Chestnut Fruit Macro Shot Autumn Background
A tiny acorn growing on an oak tree in a forest.
Gall wasps are insects that lay their eggs in plant tissue. This is where growths, known as Gqallen, develop. The larvae of the gall wasps grow in these growths. Most species of gall wasps occur in the Mediterranean region and on the Black Sea, there are no gall wasps in the tropics.
View of an acorn plant.
Biorhza pallida on Quercus robur
Growing brown acorns on an oak branch. Seeds, fruits, nuts of a forest tree. Autumn. Oak acorn
Frutos y semillas
Hazelnut
Three weathered galls grow on the branch of an oak tree. The round fruits are partially decayed. A dry oak leaf hangs on the branch. The background is light brown.
Leaf Galls on a eucalyptus leaf
Biorhiza pallida
Sessile Oak (Quercus petraea) - Küre Mountains National Park
Tree infection. Closeup.
A single fruit capsule of a Coliguay Tree (Colliguaja odorifera) in late winter in central Chile, near the capital Santiago.  The developing fruit has been invaded by the tiny Chalcid wasp, Aprostocetus colliguayae, that has caused a swollen gall to develop and protect the growing wasp larvae, effectively sterilising the fruit capsule of the Coliguay plant.
Oak apples on the underside of an oak leaf
Fallen wild fruit seeds and shoots growing on forest ground
Free Images: "bestof:gall oak gall round parasite nut"
gall-oak-gall-round-parasite-nut-1457549.jpg
Oak_leaf_gall;_Keys_(Desert_Queen)_Ranch.jpg
Pin_oak_gall,_U,_back,_Upper_Marlboro,_MD_2012-10-31-15.36.12_ZS_PMax.jpg
oak-oregon-hagg-lake-gall-wasp-1006089.jpg
oak-oregon-hagg-lake-gall-wasp-1006087.jpg
diplolepis-rosae-rose-bedeguar-gall-848874.jpg
diplolepis-rosae-rose-bedeguar-gall-848875.jpg
plant-galle-pest-cynips-divisa-475593.jpg
Galle Pediaspis aceris sur feuille Acer pseudoplatanus.jpg
hand-injury-skin-abrasion-gall-474279.jpg
hand-injury-skin-abrasion-gall-474278.jpg
vase-glass-%C3%A9mile-gall%C3%A9-art-nouveau-360059.jpg
vase-glass-%C3%A9mile-gall%C3%A9-art-nouveau-360057.jpg
vase-glass-%C3%A9mile-gall%C3%A9-art-nouveau-360056.jpg
acorn-nut-oak-autumn-brown-seed-56360.jpg
vase-glass-%C3%A9mile-gall%C3%A9-art-nouveau-183198.jpg
acorn-nut-oak-oak-tree-1592079.jpg
Creosote_(Larrea_tridentata)_gall.jpg
macro-leaf-parasite-nature-oak-285901.jpg
acorns-fall-nut-oak-trees-woods-87794.jpg
acorns-fall-nut-oak-trees-woods-87795.jpg
acorns-fall-nut-oak-trees-woods-87793.jpg
acorns-fall-nut-oak-trees-woods-87792.jpg
acorn-cluster-oak-seed-nut-green-57305.jpg
acorn-cluster-oak-seed-nut-green-57306.jpg
oak-tree-slice-old-round-nature-18557.jpg
acorn-nut-nature-autumn-oak-seed-188426.jpg
acorns-nuts-pair-oak-nut-seed-208460.jpg
InkErosion.jpg
tree-gold-elm-smith-deciduous-tree-807219.jpg
Sugar_sucker.jpg
hand-injury-wound-blood-crack-357890.jpg
hand-injury-wound-blood-crack-357892.jpg
aloe-vera-aloe-barbadensis-277949.jpg
aloe-vera-aloe-barbadensis-277948.jpg
acorn-closeup-nature-autumn-oak-1003403.jpg
plant-galle-sleeping-rose-apple-693921.jpg
plant-galle-sleeping-rose-apple-693920.jpg
plant-galle-sleeping-rose-apple-693919.jpg
acorn-acorns-branch-flora-fresh-15602.jpg
Magna_Carta_(British_Library_Cotton_MS_Augustus_II.106).jpg
View_from_Kirppuvuori,_Suolahti_to_northeast.jpg
Gymnosporangium_juniperi-virginianae,_Maryland,_Upper_Marlboro_2013-02-19-14.57.31_ZS_PMax.jpg
acorn-macro-closup-oak-autumn-1030819.jpg
tree-trunk-tree-timber-wood-1435444.jpg
Kermes-oak-branch-with-ripe-seed.jpg
acorn-acorns-autumn-oak-nature-456205.jpg
Istanbul_comet_and_earthquake_1556.jpg
tree-green-environment-nature-1320990.jpg
oak-tree-acorns-oak-nature-tree-746453.jpg
vintage-wheelchair-disabled-1537992.jpg
lotus-seed-flower-leaf-pod-indian-1549423.jpg
lotus-seed-flower-leaf-pod-indian-1549445.jpg
lotus-seed-flower-leaf-pod-indian-1549422.jpg
lotus-seed-flower-leaf-pod-indian-1549426.jpg
lotus-seed-flower-leaf-pod-indian-1549437.jpg
lotus-seed-flower-leaf-pod-indian-1549448.jpg
lotus-seed-flower-leaf-pod-indian-1549332.jpg
lotus-seed-flower-leaf-pod-indian-1549447.jpg
lotus-seed-flower-leaf-pod-indian-1549444.jpg
lotus-seed-flower-leaf-pod-indian-1549434.jpg
lotus-seed-flower-leaf-pod-indian-1549333.jpg
lotus-seed-flower-leaf-pod-indian-1549446.jpg
lotus-seed-flower-leaf-pod-indian-1549432.jpg
lotus-seed-flower-leaf-pod-indian-1549439.jpg
lotus-seed-flower-leaf-pod-indian-1549337.jpg
lotus-seed-flower-leaf-pod-indian-1549429.jpg
lotus-seed-flower-leaf-pod-indian-1549339.jpg
lotus-seed-flower-leaf-pod-indian-1549335.jpg
lotus-seed-flower-leaf-pod-indian-1549425.jpg
lotus-seed-flower-leaf-pod-indian-1549436.jpg
lotus-seed-flower-leaf-pod-indian-1549431.jpg
lotus-seed-flower-leaf-pod-indian-1549438.jpg
lotus-seed-flower-leaf-pod-indian-1549424.jpg
lotus-seed-flower-leaf-pod-indian-1549427.jpg
lotus-seed-flower-leaf-pod-indian-1549334.jpg
lotus-seed-flower-leaf-pod-indian-1549430.jpg
lotus-seed-flower-leaf-pod-indian-1549428.jpg
lotus-seed-flower-leaf-pod-indian-1549336.jpg
lotus-seed-flower-leaf-pod-indian-1549338.jpg
kereru_,_new_Zealand_Wood_Pigeon.jpg
Pieter_Brueghel_the_Elder_-_The_Dutch_Proverbs_-_Google_Art_Project.jpg
gallenkallela_marie_gall_n_kuhmoniemi_bridge_1890.jpg
Tobias_puts_the_gall_of_the_fish_on_his_father's_eyes,_by_Gerrit_Willemsz_Horst.jpg
Cyl proj scale Lambert Gall.svg
acorn-nut-oak-tree-autumn-seed-42791.svg
acorn-nut-oak-plant-seed-tree-1299953.svg
acorn-nut-oak-plant-seed-tree-1299954.svg
acorn-oak-nut-seed-food-famines-23918.svg
acorn-forest-nut-oak-seed-tree-1300385.svg
acorn-nut-tree-autumn-seed-oak-37207.svg
Emile_Gallé_by_Emile_Gallé.jpg
Claude_Gallée-Enée_shassant_le_cerf.jpg
Emile_Gallé_-_Untitled_-_Google_Art_Project.jpg
Gray1095_-_pl.svg
Emile_Gallé_-_Design_for_a_Bronze_Mounted_Vase_-_Google_Art_Project.jpg
Illu_pancrease-num.svg
Ittenheim_StGall36.JPG
Ittenheim_StGall37.JPG
Ittenheim_StGall18.JPG
Terms of Use   Search of the Day