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A bright yellow wildflower of the early spring is the winter aconite (Eranthus hyemalis). It is responsible for large patches of yellow flowers highlighted against dark green leaves / foliage.
Orange flower of  California golden poppy .eschscholzia plant ,it's springtime
Multiple yellow flowers of evening primrose in June
Horizontal closeup photo of buds on white Agapanthus flower heads growing on plants in a Summer garden. Soft focus background.
Common tansy,\nTanacetum vulgare summer yellow flowers closeup selective focus
Gumplant, Grindelia species, with sticky flower buds. California.
Yellow Ficaria verna flower also Known as Ranunculus ficaria, lesser celandine or pilewort, growing in the hills or the Provence region of the southern France
Two specimens of the endemic Cruckshanksia montiana (which has no English or local Spanish name) growing in coastal sand-dunes in the southern Atacama Desert region of Chile. Confined to Chile, this species can exist with very little water although, in years when the desert receives rain, Cruckshanksia will comprise some of the ‘flowering desert’ flora that happens particularly when there is an El Niño warming of the nearshore Pacific Ocean. This species has vivid yellow flowers surrounded by larger, equally yellow sepals, presumably to attract pollinators, while the regular green leaves grow close to the sand.
A white common or Shirley poppy flower showing the fragile petals partly open to expose the raised central mound and the pale stamens which surround it. The stamens have not yet released their pollen grains.
Densely-branched Shrub to 2m, often forming large Colonies. Spiny: main Spines stout, 12-25mm. Flowers golden-yellow, 15-20mm long. Pod 11-20mm, densely hairy.
Yellow dahlia flower with yellow petals
High angle closeup view of Wild Carrot or Queen Anne’s Lace growing among grasses in the NSW countryside near Armidale
single orange poppy
Flowers
Poppy Flower in a park
Close-Up of Green Euphorbia Flowers in Spring.
A bunch of green flowers with yellow centers. The flowers are in a field and are surrounded by grass
Aquilegia or Columbine is perennial wildflower, which is native to most temperate areas of the world. It tends to cross-pollinate, hybridize, and self-seed freely, creating new strains and colors. Columbine flowers come in many different colors, including red, pink, white, yellow, blue and purple. They bloom in late spring to early summer and self-seed readily if not deadheaded.
A closeup of golden poppy blooming in the garden
Beautiful begonia (hybrid)
Flower of a creeping-oxeye, Sphagneticola trilobata, a widespread invasive species.
Flowers in bloom, beauty in nature, romantics,
In summer, Sedum maximum grows in the garden
Found in Europe, Turkey and the Caucasus, Euphorbia amygdaloides is from the family Euphorbiaceae
Yellow sorrel (Oxslis corniculata) flowers. Oxalidaceae perennial plants native to Japan. Five-petal yellow flowers bloom from spring to autumn.
A mass planting of Dandelion Flowers make a beautiful bright yellow nature background.
Close up of a cluster of yellow wildflowers on a meadow
Creamcups, Platystemon californicus, is a monotypic genus of flowering plants in the poppy family containing the single species. Pepperwood Preserve; Santa Rosa;  Sonoma County, California
A closeup of western salsify in Zion National Park
Sweet-Alyssum 'Snow Crystals'
Free Images: "bestof:Ranunculuscortusifolius.jpg en Ranunculus cortusifolius in the UC Botanical Garden Berkeley California USA Identified by sign own Stickpen 2010-05-20 public"
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Giant_buttercup_(Ranunculus_cortusifolius)._Large_yellow_flowers_on_4_foot_tall_perennial_plants._Leaves_are_bright_green_and_maple-shaped._Native_to_the_Canary_Islands..jpg
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Unidentified glass fruit - De Young Museum - DSC00305.JPG
Reliefs - Spreckels Temple of Music - San Francisco, CA - DSC05238.JPG
Young female mummy from near Lupo, Peruvian Andes, about 550 years old - San Diego Museum of Man - DSC06926.JPG
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Abacus_at_Soda_Hall,_UC_Berkeley.jpg
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Kaldari Water Lily.jpg
2013 roses Fens Boston USA.jpg
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2013 roses Fens Boston.jpg
Sunset - Carmel Beach, California - DSC07156.JPG
Sunset - Carmel Beach, California - DSC07159.JPG
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Berkeley Sunset by Bananna49.jpeg.jpg
UC Davis arboretum - ducks.jpg
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Miami Beach Botanical Garden - IMG 8009.JPG
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Sign promoting California condor recovery program.jpg
2013 roses Back Bay Fens Boston USA.jpg
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Cool street in hillcrest.jpg
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2013 roses Back Bay Fens Boston.jpg
Courthouse street city buildings.jpg
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Polemonium reptans 2009.jpg
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Big muddy national wildlife refuge sign.jpg
Kaldari Habronattus amicus male 04.jpg
San Francisco Conservatory of Music - DSC01305.JPG
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Gorilla gorilla - San Francisco Zoo - San Francisco, CA - DSC03909.jpg
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Birds and varmints - Museum of Wildlife and Fish Biology - University of California, Davis - DSC03327.JPG
Silver Garden - Longwood Gardens - DSC01106.JPG
Silver Garden - Longwood Gardens - DSC01122.JPG
Mission Beach-San Diego-California.jpg
Red studded flower adelaide botanical gardens.jpg
Small but bright blooms adelaide botanical gardens.jpg
Landscape Arch Arches NP251.jpg
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Beaks or flowers adelaide botanical gardens south Australia.jpg
View over the Botanical Garden in Brussels.JPG
Panneau parc Château de Champs sur Marne.jpg
Music Cabinet by unknown Cincinnati maker, c. 1875-1890, American black walnut and brass - Cincinnati Art Museum - DSC03045.JPG
Tiger Attacking a Peacock, by Antoine-Louis Barye, c. 1830-1840, plaster, wax - Fogg Art Museum, Harvard University - DSC01270.jpg
Piano, Horace Waters, New York - O. Henry Museum - Austin, Texas - DSC09223.jpg
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Panneau plan domaine Fontainebleau.jpg
Gypsum 'desert roses', Chihuahua, Mexico - Natural History Museum of Utah - DSC07463.JPG
October Sunset, Dwight W. Tryon, 1913 - Museum of Fine Arts, Springfield, MA - DSC04029.JPG
Twilight (Sunset) by Frederic E. Church, 1856, oil on canvas - Albany Institute of History and Art - DSC08132.JPG
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HollyMonument.jpg
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The University of California Berkeley 1868.svg
Berkeley Southside Map.svg
California Spending on Corrections and Universities as Percent of Budget.svg
Prometheus Bound by Thomas Cole, 1847, oil on canvas - De Young Museum - DSC01271.JPG
Joshua Henshaw by John Singleton Copley, c. 1770, oil on canvas - De Young Museum - DSC01240.JPG
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