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Bur oak (Quercus macrocarpa) acorns ripening on the tree.
Close up of willow tree
Coast Live Oak (Quercus agrifolia) seeds close-up on a tree branch. Oak tree acorns close-up at sunset
Sälg (Salix caprea) goat willow, pussy willow, great sallow branch in spring \nPhoto taken outdoors in nature in natural sunlight
New leaves just opening up in early spring on a Blackjack Oak Tree
Growing brown acorns on an oak branch. Seeds, fruits, nuts of a forest tree. Autumn. Oak acorn
Quercus variabilis develops catkin inflorescence in the spring. Flowering of oak, catkins and buds in April.
Quercus rubra tree (American red oak) in springtime.
The tender buds of trees
Sessile Oak (Quercus petraea) - Küre Mountains National Park
Oak (Quercus sp.) flowers in bloom in springtime.
Quercus durata, the California scrub oak, or leather oak, is an oak endemic to California.  Acorn.  Fagaceae.
Closeup photo of pollen hanging from an oak tree in springtime with bokeh background
Tree blooming in early spring. Tree buds.
New tree leaves budding in the spring at oak tree
A tiny acorn growing on an oak tree in a forest.
Close up of young flowers blossom on oak tree branch with male catkins and young leaves
Seoul Korea
Walnut flowers are in the botanical garden, North China
Acorns of german oak tree
Gorgeous Willow oak (Quercus phellos) green foliage against blue sky background. Public landscape city park Krasnodar or 'Galitsky park' for relaxation and walking
Lychee branch with immature fruit - Latin name - Litchi chinensis
Chestnut tree close up
Bud of an unknown tree found near the grassy edge Bluff of Saint Joseph Michigan in June 2018.
Acorns and oak leaves in Colorado, USA, North America
The semi-mature female cones of a Cut Leaved Alder (Alnus glutinosa 'Imperialis') in September
Buds of  maple leaves opening up in spring. Back lit. Shot with a Canon 5D Mark IV.
Quercus myrsinifolia \nShirakashi fruit, acorns
leaves of the sun
Free Images: "bestof:Willow oak-leaves-buds-immature-acorns.jpg This photo shows a Willow oak which is an unusual oak species because its leaves aren't lobed but look like those of"
Andrena_wellesleyana,_m,_back,_Middlesex_Co,_MA_2016-02-09-11.36.jpg
Andrena_wellesleyana,_m,_side,_Middlesex_Co,_MA_2016-02-09-11.57.jpg
Andrena_(Parandrena)_weilesleyana,_f,_back,_Middlesex_Co,_MA_2016-02-11-11.12.jpg
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Megachile_policaris,_back,_chambers_co,_Texas_2016-07-27-18.00.jpg
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Megachile_policaris,_face,_chambers_co,_Texas_2016-07-27-18.10.jpg
Chrysocolletes,_m,_australia,_side_2014-10-11-16.53.30_ZS_PMax.jpg
Chrysocolletes,_m,_australia,_face_2014-10-11-16.42.35_ZS_PMax.jpg
kereru_,_new_Zealand_Wood_Pigeon.jpg
Triepeolus_lunatus,_f,_back,_Charleston_Co.,_SC_2016-09-08-18.14.jpg
Triepeolus_lunatus,_f,_right_side,_Charleston_Co.,_SC_2016-09-08-18.37.jpg
Triepeolus_lunatus,_f,_face,_Charleston_Co.,_SC_2016-09-08-18.23.jpg
quercus-rubra-leaves-acorns-red-oak-844411.jpg
salix-alba-white-willow-tree-flora-844421.jpg
autumn-background-leaves-emerge-243378.jpg
quercus-coccinea-scarlet-oak-tree-846542.jpg
quercus-rubra-northern-red-oak-844638.jpg
quercus-rubra-northern-red-oak-844640.jpg
quercus-rubra-northern-red-oak-844639.jpg
The-oak-growing-in-an-agricultural-field.jpg
leaf-green-back-light-shine-through-141600.jpg
leaf-green-back-light-shine-through-141601.jpg
leaf-green-back-light-shine-through-141597.jpg
leaf-green-back-light-shine-through-141599.jpg
leaf-green-back-light-shine-through-141598.jpg
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Andrena_nigrae,_M,_Side,_MD,_PG_County_2013-08-20-16.47.09_ZS_PMax.jpg
Andrena_nigrae,_M,_Back,_MD,_PG_County_2013-08-20-16.32.12_ZS_PMax.jpg
Andrena_nigrae,_M,_Face,_MD,_PG_County_2013-08-20-16.37.09_ZS_PMax.jpg
Emerging_leaves.jpg
Buckeye_leaves.jpg
Svastra_atripes_atrimitra,_F,_Side,_GA,_Baker_County_2015-01-09-17.01.53_ZS_PMax.jpg
Melissodes_apicata,_f,_face,_Maine,_Du_Clos_2015-12-01-16.48.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
Saddleback_Caterpillar.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
West_Fork_of_Oak_Creek_Canyon_No._108.jpg
Pine_National_Scenic_River.jpg
Cosumnes_River_Preserve.jpg
Cosumnes_River_Preserve.jpg
Cosumnes_River_Preserve.jpg
Pine_National_Scenic_River.jpg
Pine_National_Scenic_River.jpg
Pine_National_Scenic_River.jpg
Pine_National_Scenic_River.jpg
Svastra_atripes_atrimitra,_F,_Face,_GA,_Baker_County_2015-01-09-16.51.37_ZS_PMax.jpg
Melissodes_lupina,m,face,Lincoln_Co,_WY_2016-02-25-12.03.jpg
Melissodes_lupina,m,side,Lincoln_Co,_WY_2016-02-25-12.14.jpg
Lithurgus_tibialis,_M,_Face,_Greece,_Aegean_Islands,_Lesvos,_Moria_2015-03-06-12.08.13_ZS_PMax.jpg
Lithurgus_tibialis,_F,_Side,_Greece,_Aegean_Islands,_Lesvos,_Mytilene_2015-03-06-15.20.12_ZS_PMax.jpg
Anthophora_crinipes,_F,_Back,_Greece,_Aegean_Islands_2014-12-09-12.18.06_ZS_PMax.jpg
Colletes_cariniger,_F,_Back,_Greece,_Aegean_Islands_2014-12-09-16.40.40_ZS_PMax.jpg
Melissodes_comptoides,_m,_face,_Kent_Co_2015-12-03-11.00.jpg
Melissodes_comptoides,_m,_side,_Kent_Co_2015-12-03-11.13.jpg
Osmia_rufohirta,_F,_Face,_Greece,_Aegean_Islands,_Lesvos,_Mytilene_2015-02-16-16.04.47_ZS_PMax.jpg
Osmia_rufohirta,_F,_Back,_Greece,_Aegean_Islands,_Lesvos,_Mytilene_2015-02-16-15.52.37_ZS_PMax.jpg
Stelis_nasuta,_M,_Face,_Greece,_Aegean_Islands,_Lesvos,_Mytilene_2015-02-24-13.36.57_ZS_PMax.jpg
Colletes_validus,_male,_side_2012-04-12-12.46.jpg
Lithurgus_tibialis,_F,_Face,_Greece,_Aegean_Islands,_Lesvos,_Mytilene_2015-03-06-15.06.16_ZS_PMax.jpg
Megachile_exilis,_m,_face,_Pr._George's_Co.,_MD_2016-03-16-00.05.jpg
Megachile_exilis,_m,_side,_Pr._George's_Co.,_MD_2016-03-16-00.29.jpg
Hello_There,_Manatee.jpg
Osmia_cornifrons,_F,_Face,_Washington,_DC_2014-02-23-15.08.06_ZS_PMax.jpg
Anthophora_crinipes,_F,_Side,_Greece,_Aegean_Islands_2014-12-09-13.14.07_ZS_PMax.jpg
Lasioglossum_lineatulum,_female,_back_2012-07-13-17.34.jpg
Lasioglossum_michiganense,_F,_Side,_NY,_Queens_2014-04-22-14.59.53_ZS_PMax.jpg
Lasioglossum_michiganense,_F,_Face,_NY,_Queens_2014-04-22-14.45.01_ZS_PMax.jpg
Megachile_xylocopoides,_F,_Face,_Florida_2014-01-14-11.00.jpg
Nomada_denticulata,_m,_right_side,_Charles_Co._Maryland_2016-06-27-16.34.47_ZS_PMax_UDR.jpg
Bombus_perplexus,_f,_left_side,_Centre_Co.,_PA_2016-10-20-10.33.jpg
Bombus_perplexus,_f,_back,_Centre_Co.,_PA_2016-10-20-10.13.jpg
Nomada_denticulata,_m,_back,_Charles_Co._Maryland_2016-06-27-16.02.25_ZS_PMax_UDR.jpg
Megachile_xylocopoides,_F,_Back,_Florida_2014-01-14-10.51.jpg
Lasioglossum_lineatulum,_female,_face_2012-07-12-17.04.jpg
Andrena_hybrida,_F,_Face,_Greece,_Aegean_Islands,_Lesvos,_Aglassos_2015-02-24-14.jpg
Andrena_hybrida,_F,_Side,_Greece,_Aegean_Islands,_Lesvos,_Aglassos_2015-02-24-15.jpg
bee_reddish,_f,_argentina,_angle_2014-08-07-21.06.07_ZS_PMax.jpg
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bee_reddish,_f,_argentina,_face_2014-08-07-21.49.46_ZS_PMax.jpg
Nomia_species,_m,_oman,_angle_2014-08-09-19.16.10_ZS_PMax.jpg
Nomia_species,_m,_oman,_side_2014-08-09-20.08.16_ZS_PMax.jpg
Heriades_carinata,_f,_side,_Prince_George's_Co,_MD_2016-04-15-22.16.jpg
Heriades_carinata,_f,_back,_Prince_George's_Co,_MD_2016-04-15-21.57.jpg
Bombus_impatiens,_red_freak,_F,_Back,_Maryland,_Frederick_County_2014-12-05-13.51.29_ZS_PMax.jpg
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