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  • Found throughout much of the American Southwest, rattlesnake weed is a member of the spurge family. Like all species of the Euphorbia genus, oozes a milky white sticky sap when damaged, and be careful because the sap of this particular species is poisonous. It gets its name from the erroneous fact that it was once believed that mashing this plant into a poultice would cure a rattlesnake bite. This one was photographed in Southern California's Mojave Desert.
    Rattlesnake Weed
  • Musk thistle is a very spiky, invasive species from Eurasia and has now become a noxious weed throughout most of the world. This one was photographed in Logan County just outside of Sterling, Colorado.
    Musk Thistle
  • These very beautiful bittersweet nightshade berries found ripening on the vine are native to Europe and Asia, and arrived roughly in the 1860's and were used by the Makah Indians as a medicine for stomach issues. Now naturalized throughout most of North America, this relative to the potato is an invasive weed that can grow in huge thickets and can compete with native plants. This plant is known to be VERY DANGEROUS to both humans and other animals and has caused people to die. It is said that once the berries are fully ripe (when they are bright red) that the amount of solanine - the toxic alkaloid, is greatly reduced. Seeds are spread by the common song sparrow and a few other birds that eat them, who are unaffected by the poisons the berries carry.
    Bittersweet Nightshade
  • These very beautiful bittersweet nightshade berries found ripening on the vine are native to Europe and Asia, and arrived roughly in the 1860's and were used by the Makah Indians as a medicine for stomach issues. Now naturalized throughout most of North America, this relative to the potato is an invasive weed that can grow in huge thickets and can compete with native plants. This plant is known to be VERY DANGEROUS to both humans and other animals and has caused people to die. It is said that once the berries are fully ripe (when they are bright red) that the amount of solanine - the toxic alkaloid, is greatly reduced. Seeds are spread by the common song sparrow and a few other birds that eat them, who are unaffected by the poisons the berries carry.
    Bittersweet Nightshade
  • Found all around the world's temperate regions and native to Europe and Asia, this very common and well-recognized member of the chicory and aster family is usually known as a weed, pest, or and nuisance. To others it is an important medicinal plant, edible green, and reminder of springtime and summer. This one was found growing in an old coniferous forest with a patch of open ground in Enumclaw, Washington.
    Common Dandelions
  • These very beautiful bittersweet nightshade berries found ripening on the vine are native to Europe and Asia, and arrived roughly in the 1860's and were used by the Makah Indians as a medicine for stomach issues. Now naturalized throughout most of North America, this relative to the potato is an invasive weed that can grow in huge thickets and can compete with native plants. This plant is known to be VERY DANGEROUS to both humans and other animals and has caused people to die. It is said that once the berries are fully ripe (when they are bright red) that the amount of solanine - the toxic alkaloid, is greatly reduced. Seeds are spread by the common song sparrow and a few other birds that eat them, who are unaffected by the poisons the berries carry.
    Bittersweet Nightshade
  • These very beautiful bittersweet nightshade berries found ripening on the vine are native to Europe and Asia, and arrived roughly in the 1860's and were used by the Makah Indians as a medicine for stomach issues. Now naturalized throughout most of North America, this relative to the potato is an invasive weed that can grow in huge thickets and can compete with native plants. This plant is known to be VERY DANGEROUS to both humans and other animals and has caused people to die. It is said that once the berries are fully ripe (when they are bright red) that the amount of solanine - the toxic alkaloid, is greatly reduced. Seeds are spread by the common song sparrow and a few other birds that eat them, who are unaffected by the poisons the berries carry.
    Bittersweet Nightshade
  • These very beautiful bittersweet nightshade berries found ripening on the vine are native to Europe and Asia, and arrived roughly in the 1860's and were used by the Makah Indians as a medicine for stomach issues. Now naturalized throughout most of North America, this relative to the potato is an invasive weed that can grow in huge thickets and can compete with native plants. This plant is known to be VERY DANGEROUS to both humans and other animals and has caused people to die. It is said that once the berries are fully ripe (when they are bright red) that the amount of solanine - the toxic alkaloid, is greatly reduced. Seeds are spread by the common song sparrow and a few other birds that eat them, who are unaffected by the poisons the berries carry.
    Bittersweet Nightshade
  • These very beautiful bittersweet nightshade berries found ripening on the vine are native to Europe and Asia, and arrived roughly in the 1860's and were used by the Makah Indians as a medicine for stomach issues. Now naturalized throughout most of North America, this relative to the potato is an invasive weed that can grow in huge thickets and can compete with native plants. This plant is known to be VERY DANGEROUS to both humans and other animals and has caused people to die. It is said that once the berries are fully ripe (when they are bright red) that the amount of solanine - the toxic alkaloid, is greatly reduced. Seeds are spread by the common song sparrow and a few other birds that eat them, who are unaffected by the poisons the berries carry.
    Bittersweet Nightshade
  • These very beautiful bittersweet nightshade berries found ripening on the vine are native to Europe and Asia, and arrived roughly in the 1860's and were used by the Makah Indians as a medicine for stomach issues. Now naturalized throughout most of North America, this relative to the potato is an invasive weed that can grow in huge thickets and can compete with native plants. This plant is known to be VERY DANGEROUS to both humans and other animals and has caused people to die. It is said that once the berries are fully ripe (when they are bright red) that the amount of solanine - the toxic alkaloid, is greatly reduced. Seeds are spread by the common song sparrow and a few other birds that eat them, who are unaffected by the poisons the berries carry.
    Bittersweet Nightshade
  • These very beautiful bittersweet nightshade flowers here in the Mercer Slough of Bellevue, Washington are native to Europe and Asia, and arrived roughly in the 1860's. The berries were used by the Makah Indians as a medicine for stomach issues. Now naturalized throughout most of North America, this relative to the potato is an invasive weed that can grow in huge thickets and can compete with native plants. This plant is known to be VERY DANGEROUS to both humans and other animals and has caused people to die. It is said that once the berries are fully ripe (when they are bright red) that the amount of solanine - the toxic alkaloid, is greatly reduced. Seeds are spread by the common song sparrow and a few other birds that eat them, who are unaffected by the poisons the berries carry.
    Bittersweet Nightshade
  • This little jewel of the forest floor is considered a noxious weed in Washington state (where this was photographed) and has taken over much of the Pacific Northwest. Native to Europe, this little geranium is one of hundreds of plants introduced as an attractive ornamental that escaped into the wild. Often called "Stinky Bob", crushing the leaves or stem will result in the strong odor of burning tires.
    Herb Robert
  • This invasive weed in now established in nearly all of North America, and is a member of the often-overlooked plantain family.
    English Plantain
  • These very beautiful bittersweet nightshade berries found ripening on the vine are native to Europe and Asia, and arrived roughly in the 1860's and were used by the Makah Indians as a medicine for stomach issues. Now naturalized throughout most of North America, this relative to the potato is an invasive weed that can grow in huge thickets and can compete with native plants. This plant is known to be VERY DANGEROUS to both humans and other animals and has caused people to die. It is said that once the berries are fully ripe (when they are bright red) that the amount of solanine - the toxic alkaloid, is greatly reduced. Seeds are spread by the common song sparrow and a few other birds that eat them, who are unaffected by the poisons the berries carry.
    Bittersweet Nightshade
  • Found throughout many parts of the Arizona and California, I kept running into this beautiful and often overlooked wildflower in the driest parts of the Sonoran Desert in arroyos and roadsides. This one was found outside of Organ Pipe Cactus National Monument.
    Notch-Leaf Scorpion-Weed
  • St. John's-wort has been a very important medicinal plant used to treat depression in many cultures. Although it is not native to North America, it can be found throughout most of the continent. This one was found growing in North Cascades National Park next to the Skagit River.
    St. John's-Wort
  • Found only along the Pacific coastline of Oregon and California, this beautiful pale purple to blue iris is found in wet habitats with fresh water, often in forested and open areas near the beach. This one was found growing in a small ravine where a small creek was flowing into a tidal pool below on Cape Perpetua on the Oregon Coast.
    Douglas Iris
  • Found only along the Pacific coastline of Oregon and California, this beautiful pale purple to blue iris is found in wet habitats with fresh water, often in forested and open areas near the beach. This one was found growing in a small ravine where a small creek was flowing into a tidal pool below on Cape Perpetua on the Oregon Coast.
    Douglas Iris
  • This beautifully annoying field and garden pest is here to stay. This member of the morning glory family is found all over North America except Alaska, the Yukon, Northwest Territories. It is found in all Canadian provinces excluding Newfoundland and Labrador, and some of the Caribbean islands. This one was photographed in the Columbia River Gorge in Washington on the Washington-Oregon border.
    Field Bindweed
  • Common St. Johnswort is found in most places in North America except the coldest regions or the driest of deserts. It is traditionally used as an herbal medicine for treating depression. This was photographed near the Oregon-Washington border just north of the Columbia River in Washington's Klickitat County.
    St. John's Wort
  • A close-up of the tiny flowers of sheep sorrel blooming in the Grand Tetons on a chilly summer day up in the Grand Teton Mountains.
    Sheep Sorrel
  • Field bindweed is an invasive and non-native member of the morning glory family that is widespread across most of North America. Although it has very beautiful  flowers, it is considered a pest and nuisance in gardens, such as this one growing in a field in northeastern Colorado.
    Field Bindweed
  • Sheep sorrel is a very widespread invasive member of the buckwheat family that originated from the Mediterranean region of Eurasia. Found in every state of the US and in every province of Canada, it is usually found in disturbed areas from the coastline to the sub-alpine elevations of mountain ranges across North America.
    Sheep Sorrel
  • St. Johns' wort is the name given to the nearly 400 species of the Hypericum species found around the world. Traditionally collected and harvested on St. John's Day (June 24), this particular species is native to Eastern Europe extending deep into Asia. Medicinally collected for use to treat depression, I've made tea from the leaves that was not only delicious, it also left me feeling quite (and perhaps overly) cheerful! This one was found about one third of the way up Mount Rainier's western face in Washington State.
    Common St. John's Wort
  • When looking at the flower of the Himalayan blackberry, it's easy to see that it actually is a member of the rose family. A favorite of bees and loads of other wildlife who love the delicious sweet blackberries that come later in the summer, this highly invasive import which is actually from the Armenia area (not sure where the  Himalayan part of the name comes from)  thrives in the Pacific Northwest and is a major pest for gardeners and forest stewards all over the region. This one was found in the Woodard Bay Conservation Area just outside of Olympia, Washington on a beautiful summer afternoon.
    Himalayan Blackberry Flowers
  • The highly controversial and extremely invasive Himalayan blackberry is might be considered the classic success story if looked at from the the view of this extremely aggressive invasive plant. Why it is called the Himalayan blackberry is a mystery to me, but it originally comes from Armenia and Iran. Introduced to the East Coast of the United States in 1885, it is believed it was confused with a similar European species of blackberry and with the help of local birds who absolutely love the berries, it had reached reached the West Coast of North America. This plant grows fast, easily outcompetes native foliage and is extremely tough to eradicate. On the plus side, this particular blackberry puts out bumper-crops of blackberries every summer that are absolutely delicious. I often see bushes laid out flat on the ground under the weight of all the berries. These were found growing in the Woodard Bay Conservation Area just outside of Olympia, Washington.
    Himalayan Blackberry (Rubus armeniacus)
  • Believed to be the exact species adopted as the symbol of King Louis VII of France for the Second Crusade, this invasive import from Europe eventually because the infamous "Fleur-de-lis". Today it is found in wetlands all over North America on both coasts, but not quite in the center of the continent - yet. This one was found growing in extremely dense numbers in Yakima County, Washington between Yakima and Ellensburg.
    Yellow Flag Iris
  • Looking much like a miniature watermelon, the creeping cucumber is in fact a native cucumber that grows in the American Southeast as far north as Illinois and Pennsylvania and west to Texas and Kansas on long vines with grape-like leaves. While considered edible, it's just one of those things you wouldn't go out of your way to eat. These were found in the Big Cypress National Preserve in Southwest Florida.
    Creeping Cucumber
  • This very common large yellow butterfly is found across a huge range, from Southern Ontario in Canada to as far south as Argentina. This individual is a male (the female has slightly more of a pattern on the underside of the wings, but not much) and was photographed feeding on caesarweed nectar just outside of Naples, Florida on the outskirts of the Corkscrew Swamp.
    Cloudless Sulphur
  • The invasive Mexican bluebell (or ruellia) has escaped cultivated gardens and is now found all over Florida.
    Mexican Bluebell
  • An invasive, yet beautiful non-native yellow flag iris catches the first rays of sunlight over the basalt walls of Yakima Canyon on the Yakima River at dawn.
    Yellow Flag Iris
  • Although very beautiful and showy, the yellow flag iris is a pesky invasive European import that is known to block waterways and choke out native plants and wildflowers. This one was found growing along the Yakima River in great profusion, on the eastern bank of the Yakima River, just north of Selah, WA.
    Yellow Flag Iris
  • Native to Europe, this strikingly beautiful blue wildflower is now found growing wild all across North America and is a very important food for livestock, and as a coffee substitute or coffee-additive. Anyone familiar with some of the wonderful coffees from the New Orleans area will be very familiar with chicory coffee, which is very similar with a somewhat nutty taste, that is made from the roasted and ground roots. This one was found growing wild in at the edge of a field in Northern Arkansas.
    Chicory
  • One of the most common wildflowers to grow in the pinelands of South Florida is the chocolateweed, as seen her ein the CREW Marsh Hiking Trails here in SW Florida.
    Chocolateweed
  • The unusual and bright blue widemouth dayflower in all it's glory growing in a pine scrub in Estero, Fl (Lee County).
    Whitemouth Dayflower
  • This huge batch yellow flag iris was found growing along the Yakima River in great profusion the eastern bank of the Yakima River, just north of Selah, WA. Although incredibly beautiful, they are considered a pest as they completely take over river banks. Because they lack the diseases and wildlife that eat them found in their native Europe, they can multiply unchecked - crowding out North American native plants that don't enjoy such an easy advantage.
    Yellow Flag Iris
  • Beautiful flower of the Florida ironweed blooming in the CREW Marsh Hiking Trails in SW Florida.
    Florida Ironweed
  • This common weed is usually found in disturbed areas, such as this one on the side of US41 in Collier County, Florida.
    Sow Thistle
  • Woolly vetch (sometimes called winter vetch) is an important crop used in agriculture for fixing depleted soil nitrogen, and is often planted in fields to correct deficiencies resulting from extensive farming. Found in nearly all of North America, woolly vetch doubles as a tenacious weed that is sometimes hard to remove as vast numbers of seeds are released early which grow back the next season.
    Woolly Vetch
  • Bull thistle (also known as spear thistle) is another invasive thistle that has spread across most of North America and is most frequently found in disturbed habitats. The benefit of this sharp and prickly, hard to eradicate weed is that it is a very good source of food and nectar for bees, butterflies, birds amd insects.
    Bull Thistle
  • The invasive water-hyacinth while beautiful, clogs many wetlands and canals and is now designated as a federal noxious weed.
    Water-Hyacinth
  • Often referred to as a weed, the very common yellow woodsorrel is found almost all over North America, with the exception of Labrador, Alberta, California, Oregon, Nevada and Utah. Commonly found growing in flowerbeds, lawns, etc. - all parts of this native beauty is edible. I grew up chewing on this plant because I love the intensely citrusy tanginess of it.
    Common Yellow Woodsorrel