Tim Fitzharris / Vervain (Verbena officinalis) at Franklin Mountains State Park, Chihuahuan Desert, Texas
00175042
Tim Fitzharris / Temple of the Sun with Sunflowers in the foreground, Capitol Reef National Park, Utah
00481807
Tom Vezo / Evening Primrose (Oenothera sp) flowers in desert, Joshua Tree National Park, California
00481806
Tom Vezo / Evening Primrose (Oenothera sp) flowers in desert, Joshua Tree National Park, California
00455038
Kevin Schafer / Tickseed (Coreopsis calliopsidea) and Foxtail (Vulpia sp), Carrizo Plain National Monument, California
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Tim Fitzharris / California Poppy (Eschscholzia californica) covered hillside, spring, Tehachapi Hills near Gorman, California
00176732
Tim Fitzharris / Coyote tracks flowering shrubs on the dune fields in front of the Sangre de Cristo Mountains, Great Sand Dunes National Monument, Colorado
00176676
Tim Fitzharris / Indian Paintbrush (Castilleja coccinea) blooming, Texas
00176491
Tim Fitzharris / Annual Coreopsis (Coreopsis tinctoria) Texas Bluebonnet (Lupinus subcarnosus) and Drummond's Phlox (Phlox drummondii), Fort Parker State Park, Texas
00176022
Tim Fitzharris / Rhododendron (Rhododendron sp) blossoming at Mabry Mill, a restored sawmill and popular tourist destination run by the National Park Service, Blue Ridge Parkway, Virginia
00175970
Tim Fitzharris / Common Sunflower (Helianthus annuus) cluster and Temple of the Sun, Capitol Reef National Park, Utah
00116820
Jim Brandenburg / Water Lily (Nymphaea sp) on pond, Boundary Waters Canoe Area Wilderness, Minnesota
00175289
Tim Fitzharris / California Poppy (Eschscholzia californica) and Desert Bluebells (Mersensia sp) carpeting a spring hillside, California
00175269
Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus) and Indian Paintbrush (Castilleja miniata) flowers in bloom, Hill Country, Texas
00175261
Tim Fitzharris / California Poppy (Eschscholzia californica) and Desert Bluebells (Mersensia sp) carpeting a spring hillside, California
00175214
Tim Fitzharris / California Poppy (Eschscholzia californica) and Desert Bluebells (Mersensia sp) carpeting a spring hillside, California
00175275
Tim Fitzharris / Paintbrush (Castilleja sp) and Bulbous Barley (Hordeum murinum), Hill Country, Texas
00175273
Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus) and Indian Paintbrush (Castilleja miniata) flowers in bloom, Hill Country, Texas
00175270
Tim Fitzharris / Sand Bluebonnet (Lupinus subcarnosus) and Prickly Pear cactus (Opuntia sp), Hill Country, Texas
00123738
Shin Yoshino / Fireweed (Chamerion angustifolium) flowers in bloom around fire scorched trees, Yellowstone National Park, Wyoming
00175121
Tim Fitzharris / Mitten Rock with autumn colored cottonwoods and blooming desert shrubs, New Mexico
00220166
Tom Vezo / Northern Parula (Parula americana) male singing in blooming tree, Long Island, New York
00340904
Yva Momatiuk & John Eastcott / Indian Paintbrush (Castilleja attenuata) in bloom, close-up, Hill Country, Texas
00340901
Yva Momatiuk & John Eastcott / Indian Paintbrush (Castilleja attenuata) in bloom, close-up, Hill Country, Texas
00340897
Yva Momatiuk & John Eastcott / Indian Paintbrush (Castilleja attenuata) in bloom, close-up, Hill Country, Texas
00220481
Tom Vezo / Magnolia Warbler (Setophaga magnolia) perching in blossoming tree, Long Island, New York
00220478
Tom Vezo / Cape May Warbler (Setophaga tigrina) perching in flowering Geigertree (Cordia sebestena), Dry Tortugas, Florida
00511423
Michael & Patricia Fogden / Soaptree Yucca (Yucca elata) flowering on gypsum dunes, White Sands National Park, New Mexico
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Tim Fitzharris / California Poppy (Eschscholzia californica), Eriophyllum (Eriophyllum sp) and Desert Hyacinth flowers, Portal Ridge, California
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Tim Fitzharris / Lupine (Lupinus sp) in meadow at West Beach, Indiana Dunes National Lakeshore, Indiana
00174443
Tim Fitzharris / Lupine (Lupinus sp) in meadow at West Beach, Indiana Dunes National Lakeshore, Indiana
00174116
Tim Fitzharris / Teddy Bear Cholla (Cylindropuntia bigelovii) under stormy skies, Joshua Tree National Park, California
00173400
Tim Fitzharris / California Poppy (Eschscholzia californica) and Lupine (Lupinus sp) flowers in bloom, Tehachapi Mountains, California
00058080
Jim Brandenburg / Thickspike Gayfeather (Liatris pycnostachya) blooming in prairie, Iowa
00086507
Jim Brandenburg / Sunflower (Helianthus petiolaris) closely related to the Common Sunflower, South Dakota
00001333
Jim Brandenburg / Dogberry (Cornus sanguinea) trees in bloom, Great Smoky Mountains National Park, North Carolina
00481811
Tom Vezo / Evening Primrose (Oenothera sp) flowers in desert, Joshua Tree National Park, California
00116756
Jim Brandenburg / Iris (Iris sp) flowers, Minnesota
00116203
Larry Minden / Blooming cactus with scarlet flowers, Wah Wah Mountains, Utah