Leighton Photography & Imaging

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  • 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)
  • 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
  • An adult Cuban treefrog actively hunting late at night for prey among the foliage in Fort Myers, Florida. These aggressive and voracious natives to Cuba, the Cayman Islands and the Bahamas are wreaking havoc among Florida's native species of treefrogs, and are outcompeting them in terms of resources and habitat.
    Cuban Treefrog
  • An adult Cuban treefrog actively hunting late at night for prey among the foliage in Fort Myers, Florida. These aggressive and voracious natives to Cuba, the Cayman Islands and the Bahamas are wreaking havoc among Florida's native species of treefrogs, and are outcompeting them in terms of resources and habitat.
    Cuban Treefrog
  • With its expansive range, this crown vetch is an invasive species with some benefit. The thick tangle of roots make this attractive Eurasian import with its odd-pinnate leaves very useful in preventing land erosion, and is often used as an ornamental ground cover. This particular one was photographed on the edge of a steep hillside in Iowa's Waubonsie State Park.
    Crown Vetch
  • This invasive Eurasian species of the pea family is found across nearly all of North America, from Mexico to Northern Canada, from the Atlantic to the Pacific Oceans. This beautiful bloomer was found found growing in the Loess Hills region of Southwestern Iowa.
    Crown Vetch
  • The parrot gladiolus is one of the ever-increasing number of once-invasive, now naturalized species of plants that have become wild and are commonly found throughout parts of North America. This gladiolus is native to South Africa and are becoming increasingly common throughout the American Southeast. This one was photographed south of Thomasville, Georgia. The largest populations I've seen in the wild were in the salt marshes of Florida's northern Gulf Coast.
    Parrot Gladiolus
  • 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
  • We went specifically to see these exotic invasive lizards on the island of Boca Grande, Florida after hearing about how they are taking over the whole island. We saw about 100 in an afternoon.
    Spiny Iguana
  • 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
  • Considered an invasive species in North America, the Peruvian primrose-willow was introduced into the Sunshine State and many other places around the world for its beautiful yellow four-petalled flowers. These days it is a serious problem due to how fast this tall very bush grows and how easily it spreads, outcompeting coastal native plant species in Florida, Alabama, Mississippi, and the Texas Gulf Coast. This one was photographed in the Fakahatchee Strand in Collier County, Florida.
    Peruvian Primrose-Willow
  • This eastern cottontail rabbit seen here in western Washington is a non-native animal, introduced from the eastern states in the 1930's as a game animal, where it has since florished.
    Eastern Cottontail
  • 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
  • A one-time escapee from gardens and landscaping, the parrot gladiolus is here to stay. This one was photographed on the edge of a slash pine forest in southern Grady County in Georgia.
    Parrot Gladiolus
  • 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
  • This gorgeous knight anole was found in Fort Myers, Florida clinging to a melaleuca tree, and was the second I had seen in this area. These highly aggressive and largest of Florida's anoles are native to Cuba and have spread into South Florida.
    Knight Anole
  • Lawn orchid found growing in Fort Myers, Florida but not in a completely wild location. This one along with about five others appeared in one of my cultivated orchid pots on my front porch!
    Lawn Orchid (Zeuxine strateumatica)
  • Lawn orchid photographed on the edge of Loop Road, deep in the Big Cypress National Preserve.
    Lawn Orchid (Zeuxine strateumatica)
  • Angiosperms, Asteraceae, Asterids, beautiful, beauty, biennial, bloom, blooming, blooms, blossom, blossoms, botany, bud, bull thistle, Carduoideae, Cirsium, Cirsium vulgare, color, common thistle, Cynareae, dicot, flora, flower, flowers, forb, fresh, green, herb, invasive, native, natural, nature, non-native, Olympia, Onopordum acanthium, pink, plant, Plantae, plants, ruderal, Scotch thistle, Scottish thistle, spear thistle, summer, thistle, Thurston County, vulgare, Washington, west coast, wild, wildflower, wildflowers, Woodard Bay Conservation Area
    Bull Thistle (Cirsium vulgare) 2
  • Angiosperms, Asteraceae, Asterids, beautiful, beauty, biennial, bloom, blooming, blooms, blossom, blossoms, botany, bud, bull thistle, Carduoideae, Cirsium, Cirsium vulgare, color, common thistle, Cynareae, dicot, flora, flower, flowers, forb, fresh, green, herb, invasive, native, natural, nature, non-native, Olympia, Onopordum acanthium, pink, plant, Plantae, plants, ruderal, Scotch thistle, Scottish thistle, spear thistle, summer, thistle, Thurston County, vulgare, Washington, west coast, wild, wildflower, wildflowers, Woodard Bay Conservation Area
    Bull Thistle (Cirsium vulgare) 1
  • 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
  • The invasive water-hyacinth while beautiful, clogs many wetlands and canals and is now designated as a federal noxious weed.
    Water-Hyacinth
  • This beautiful, yet non-native ornamental invader is found in scattered populations across the United States and Canada. Unlike our native green mint and dead-nettle species, this native of Turkey, Iran, and Armenia has very attractive furry silvery leaves, which explains why it made its way to North America in the first place, as it was once popular in gardens with families with children. This one was photographed in Northern Arkansas.
    Lamb's Ear
  • Engelmann's prickly pear is one of the most (if not the most) widespread of the prickly pear cacti. It is found in all of the American Southwestern States (except Colorado) and can even be found as far east as Louisiana, Mississippi and Missouri and is widespread throughout much of Mexico. Oddly enough , it has become an invasive species in Kenya! The sweet, juicy fruits are a traditional and still very important food source wildlife an for many tribes and nations of the Native Americans and is commonly used in Latin American cuisine.
    Engelmann's Prickly Pear
  • Engelmann's prickly pear is one of the most (if not the most) widespread of the prickly pear cacti. It is found in all of the American Southwestern States (except Colorado) and can even be found as far east as Louisiana, Mississippi and Missouri and is widespread throughout much of Mexico. Oddly enough , it has become an invasive species in Kenya! The sweet, juicy fruits are a traditional and still very important food source wildlife an for many tribes and nations of the Native Americans and is commonly used in Latin American cuisine.
    Engelmann's Prickly Pear
  • A close-up image of the very rare Cascade Red Fox, a subspecies found in the alpine and subalpine regions of many of the volcanic mountains of the Cascades in the Pacific Northwest. This beautiful subspecies is often nearly all black with silver or gray, and once flourished over much of Northwestern North America and is facing increasing pressure from climate change, invasive species like coyotes and humans, high-elevation logging and winter recreation sports such as snowmobiling and skiing. Not long before I got this shot, I spent part of a previous evening watching two pure-black kits (baby foxes) stalking and pouncing on each other in the snow in pure delight up in near the tree line on Mount Rainier.
    Cascade Red Fox
  • This distant relative to the pineapple is endangered in the wild in North America. Confined to a few remaining counties in locations far out into the Florida Everglades and Puerto Rico, it is listed as a threatened species. Major concerns for this species are habitat loss and an invasive exotic weevil (Metamazius callizona) found in South Florida that kills it. Luckily this species is also native to Brazil, Venezuela and Bolivia, where populations are more stable. This one was photographed in SW Florida's Fakahatchee Strand. Look closely and you will see it sharing a limb with native zig-zag orchid (Epidendrum rigidum) in this submerged pond apple tree.
    West Indian Tufted Airplant (Guzmani..hia)
  • A western pond turtle basks in the sun on a beautiful California day on Lower Klamath Lake near the Oregon border. Listed as a vulnerable/threatened species, these small turtles are slow-growing, often maturing at around 10 years old and are taking a hard hit from invasive bird and animal species - especially bullfrogs and bass.
    Western Pond Turtle
  • A western pond turtle basks in the sun on a beautiful California day on Lower Klamath Lake near the Oregon border. Listed as a vulnerable/threatened species, these small turtles are slow-growing, often maturing at around 10 years old and are taking a hard hit from invasive bird and animal species - especially bullfrogs and bass.
    Western Pond Turtle
  • The brown anole is a member of the spiny lizard family and native to Cuba and the Bahamas. Common, and invasive to the United States, it is spreading north from the Florida Keys, and in a little more more than a century it has established itself as far north as Georgia and as far west as Texas in recent years. The problem with this particular species is that it is outcompeting the native and less aggressive green anole, with the additional pressure of adult male brown anoles having been known to prey on young green anoles. This particular individual resting on a  banana tree in Fort Myers, Florida is a female. Males tend to be larger and more boldly patterned.
    Brown Anole