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Close-up of back-lit red maple seeds.  Sometimes these are called helicopter seeds.
Inflorescence of the horse chestnut against the blue sky. At the beginning the flowers show a yellow centre. After fertilisation this becomes red.
Platanus × acerifolia leaves
Yellow-green oak leaves on a tree in autumn, Crimea
vergrown green leaves of Japanese maple
Leafs of an acer tree
Winged spindle flowers. Small pale yellow-green four-petaled flowers bloom in early summer. One of the world's three major autumn-foliage trees.
Blooming chestnut tree
pink inflorescence of Hydrangea quercifolia shrub
Sycamore maple seeds
Platanus acerifolia, Allergens Plants
Aesculus hippocastanum (horse chestnut) leaves
Closeup of flowers of horse chestnut tree in May
Cornus controversy variegated in blossom
Close up of summer tree
closeup spring oak branch in a sunlight
Sunlight shining through green leaves of a tree
Close up of the flower buds of a chestnut tree, Aesculus hippocastanum
Blooming Tilia branches close up
foliage of a tulip tree in sunny weather, a beautiful tulip tree and sky
oak twig on a cloudy sky background
Blooming chestnut flowers, Beautiful spring
Beech tree in autumn.
Japanese maple flowers. Sapindaceae deciduous tree. Small red flowers bloom downward in early summer.
A European beech (Fagus sylvatica asplenifolia) during springtime.
Looking up through sunlit autumn maple leaves in the forest on Vancouver Island, British Columbia.
Close-up of many green leaves of an English Oak tree (Quercus robor), as it comes into full leaf in midsummer in central England
Fraxinus ornus in bloom
Fresh green maple in springtime against clear sky.
Free Images: "bestof:20140414Acer pseudoplatanus.jpg Bergahorn Acer pseudoplatanus am Staden in Saarbrücken own AnRo0002 2014-04-14 Cc-zero Trees in spring 2014 in Sankt Johann"
acer-tataricum-first-buds.jpg
Potentilla-naumanniana-Spring-Cinquefoil.jpg
Snowberry-White-Bush-Close-up.jpg
Snowberry-on-the-green-background.jpg
White-Blossoms-of-Bing-Cherry-Tree.jpg
20110121Staden02.jpg
A-Duchesnea-indica-Mock-Strawberry.jpg
Kanzan-Cherry-Blossoms.jpg
Galle Pediaspis aceris sur feuille Acer pseudoplatanus.jpg
20140105Wildpark Saarbruecken22.jpg
Staden Bismarckbruecke2.jpg
Staden Bismarckbruecke3.jpg
20130607Rote Lichtnelke Saarbruecken.jpg
summer-redcurrant-berry-bunch.jpg
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Willow-Catkins-salix-caprea-close-up.jpg
a-bunch-of-ripe-acorns.jpg
Twigs-of-Lilly-of-the-valley.jpg
20120402Birnbaum Hockenheimer Rheinbogen11.jpg
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Frauenstein Schloss Frauenstein Haupttor 20062015 5006.jpg
20110324Saarbruecken.jpg
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20120429Von der Heydt68.jpg
20140131Kleintierzuchtverein Hockenheim1.jpg
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20120321Schwaene Saar5.jpg
20120903Schwarzpappeln Reilingen01.jpg
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20110915Schlossgarten Schwetzingen2.jpg
20140107Sonnenuntergang Hockenheim.jpg
20140128Schneeball1.jpg
Cultivar-Berberis-thunbergii-ripe-berries-in-the-autumn-garden.jpg
Blooming-beautiful-pink-flower.jpg
Close-to-a-blade-of-blooming-grass-Alopecurus-pratensis.jpg
Juneberry-shrub-close-up-with-edible-ripe.jpg
Snow-covered-trees-landscape.jpg
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Morning sunrise house and tree in Summit NJ.JPG
An-image-of-a-beautiful-church-in-Germany.jpg
golf-landscape-in-spring-day.jpg
golf-landscape-in-spring-day.jpg
Sunset in NJ through trees in Summit.JPG
Morning sky looking east at houses and trees in Summit NJ.JPG
Morning sky Summit NJ houses and gray clouds and bare trees.JPG
Sunset in Summit NJ looking west through trees with clouds.JPG
Almond trees, ruined house, Andalusia, Spain.jpg
Simple ruin, almond trees plantation, Andalusia, Spain.jpg
Trail-through-tall-trees-in-a-lush-forest.jpg
Hupaomengquan-Hangzhou-Zhejiang-China.jpg
statue-of-liberty.jpg
Summit New Jersey sunrise in winter with trees and snow covered houses.JPG
Snow covered tree in early light with house in February in New Jersey.JPG
Sorbus-aucuparia-commonly-called-rowan-and-mountainash.jpg
eautiful-unpaved-country-road-lined-with-large-trees.jpg
Gedenktafel Hauptkirche.jpg
Beautiful-winter-landscape-with-snow-covered-trees.jpg
Beautiful-winter-landscape-with-snow-covered-trees.jpg
Trees-covered-with-hoarfrost-and-snow-in-mountains.jpg
Picea pungens f.glauca, Miranda de Ebro, Spain.jpg
Tilly Feldherrnhalle Munich.jpg
View to the Sea-pool, Conleau, gulf of Morbihan, France.jpg
Church-in-Grace-Forest-Germany.jpg
Backlit Margarita Island Sunset in Las Guevaras, Venezuela.jpg
16 wood samples.jpg
Backlit-Margarita-Island-Sunset.jpg
Colonial House of Isla Margarita 121.JPG
'The_Sycamores'_by_Alexandre_Calame,_Cincinnati_Art_Museum.JPG
Larock indole synthesis Ü1-Seite001.svg
Larock indole synthesis mech-Seite001.svg
EulerPhi100.svg
Vector Rope split.svg
Albugnano-Stemma.svg
Tyne-Wear Kits.svg
Vector Rope concat.svg
Speedometer diagram.svg
Torus cycles.svg
Joachim Heinrich Campe by Johann Friedrich Matthai, 1819 AD, oil on canvas - Braunschweigisches Landesmuseum - DSC04969.JPG
Buen Retiro-Senda-Botanica.svg
Neon bulb oscillator circuit.svg
Herzog Carl Wilhelm Ferdinand by Johann Heinrich Schröder and Johann Christian August Schwartz, 1790-1795 AD, oil on canvas, view 1 - Braunschweigisches Landesmuseum - DSC04602.JPG
Herzog Carl Wilhelm Ferdinand by Johann Heinrich Schröder and Johann Christian August Schwartz, 1790-1795 AD, oil on canvas, view 2 - Braunschweigisches Landesmuseum - DSC04604.JPG
Friedrich Moller as Schuster Knierrim in Der böse Geist Lumpazivagabundus by Johann Nepomuk Nestroy, by A. Barthel, 1800-1850, oil on canvas - Braunschweigisches Landesmuseum - DSC04856.JPG
Johanna Christine Grosser as the Jungfrau von Orleans in the eponymous drama by Johann Christoph Friedrich Schiller, by A. Barthel, 1800-1850, oil on canvas - Braunschweigisches Landesmuseum - DSC04863.JPG
Wilhelm Hofler as Don Carlos in the drama Don Carlos by Johann Christoph Friedrich Schiller, by A. Barthel, 1800-1850, oil on canvas - Braunschweigisches Landesmuseum - DSC04858.JPG
Tulip cycle.svg
Performing finger searches on treaps.svg
Performing finger searches on treaps 1.svg
Carbon microphone, c. 1920s, Ellis Electrical Laboratories - Museum of Science and Industry (Chicago) - DSC06626.JPG
Gloeodontia-Maximum Likelihood-Tree.svg
Acanthofungus-Maximum Likelihood -Tree.svg
Minimum Evolution-Tree Aleurobotrys and related Taxa.svg
Maximum Likelihood -Tree-of-Aleurobotrys and related Taxa.svg
Boidinia-Maximum-Likelihood-Tree.svg
Boidinia-Minimum Evolution-Tree.svg
Metulodontia-Maximum-Likelihood.svg
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