 Upper Whiteoak Falls near Skyline Drive. Skyland, Virginia, May 16, 2007
 Skyline Drive in fog in the area of Loft Mountain. Virginia, May 16, 2007
 Area of Loft Mountain at Skyline Drive. Virginia, May 16, 2007
 A stream of Whiteoak Canyon near Skyline Drive. Skyland, Virginia, May 16, 2007
 A creek near Whiteoak Canyon Trail near Skyline Drive. Skyland, Virginia, May 16, 2007
 A stone from Thorofare Mountain Overlook of Skyline Drive. Skyland, Virginia, May 16, 2007
 View from Thorofare Mountain Overlook of Skyline Drive. Skyland, Virginia, May 16, 2007
 View from Skyline Drive in fog in the area of Dundo Group Camp. Virginia, May 16, 2007
 A road in fog Skyline Drive in the area of Dundo Group Camp. Harrisonburg, Virginia, May 16, 2007
 Hazy hills from Range View Overlook of Skyline Drive. Luray, Virginia, May 16, 2007
 Mountain Run(?) Lake east from Skyline Drive of Shenandoah National Park. Virginia, January 13, 2006
 Falls near Old Lodging Railroad at Upper Otter Creek Overlook at mile 35 of Blue Ridge Parkway. Buena Vista, Virginia, May 17, 2007
 Steel cable suspension bridge downstream from the falls in Chalk Ridge Falls Park, below a dam of Stillhouse Hollow Lake. Belton - Killeen, Texas, August 17, 2008
 Waterfall of Chalk Ridge Falls Park, below a dam of Stillhouse Hollow Lake. Belton - Killeen, Texas, May 17, 2009
 Hollow part of a cypress tree in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 Waterfall of Chalk Ridge Falls Park, below a dam of Stillhouse Hollow Lake. Belton - Killeen, Texas, August 17, 2008
 Waterfall and a pond of Chalk Ridge Falls Park, below a dam of Stillhouse Hollow Lake. Belton - Killeen, Texas, August 17, 2008
 Hollow part of a cypress tree at sunset in Pedernales Falls State Park. Johnson City, Texas, January 12, 2013
 A Quarry from Blue Ridge Parkway. Roanoke, Virginia, May 17, 2007
 View from Blue Ridge Parkway near Peaks of Otter. Virginia, May 17, 2007
 A pasture at mile 25 of Blue Ridge Parkway near Spy Run Gap. Waynesboro, Virginia, May 17, 2007
 A farm at mile 25 near Blue Ridge Parkway near Spy Run Gap. Waynesboro, Virginia, May 17, 2007
 View at mile 25 from Blue Ridge Parkway near Spy Run Gap. Waynesboro, Virginia, May 17, 2007
 Tributary of Lampasas River near the entrance of Chalk Ridge Falls Park, below a dam of Stillhouse Hollow Lake. Belton - Killeen, Texas, August 17, 2008
 Trees from Hogback Overlook of Blue Ridge Parkway. Luray, Virginia, May 16, 2007
 A waterfall near Blue Ridge Parkway, near Mile 80. Peaks of Otter, Virginia, May 17, 2007
 Fields at mile 32 near Blue Ridge Parkway. Buena Vista, Virginia, May 17, 2007
 View at mile 32 of Blue Ridge Parkway. Buena Vista, Virginia, May 17, 2007
 View from Hogback Overlook of Blue Ridge Parkway. Luray, Virginia, May 16, 2007
 A bush in bloom near Blue Ridge Parkway, near Mile 80. Peaks of Otter, Virginia, May 17, 2007
 Farms from Pine Tree Overlook, at Blue Ridge Parkway. Roanoke, Virginia, May 17, 2007
 A trillium flower near Blue Ridge Parkway, at Mile 79. Peaks of Otter, Virginia, May 17, 2007
 A dam of Otter Creek Overlook near mile 38 of Blue Ridge Parkway. Buena Vista, Virginia, May 17, 2007
 Otter Creek Overlook near mile 38 of Blue Ridge Parkway. Buena Vista, Virginia, May 17, 2007
 View from Hogwallow Flats Overlook of Blue Ridge Parkway. Front Royal, Virginia, May 16, 2007
 Old suspension bridge over a tributary of Lampasas River at the head of Stillhouse Hollow Nature Trail in Chalk Ridge Falls Park. Belton - Killeen, Texas, August 17, 2008
 Pretty sneezeweed (Helenium elegans) with down-flexed ray flowers near Lampasas River in Chalk Ridge Falls Park, below a dam of Stillhouse Hollow Lake. Belton - Killeen, Texas, May 17, 2009
 Limestone cave with a spring of a tributary of Lampasas River near the entrance of Chalk Ridge Falls Park, below a dam of Stillhouse Hollow Lake. Belton - Killeen, Texas, August 17, 2008
 River bed of a tributary of Lampasas River near the entrance of Chalk Ridge Falls Park, below a dam of Stillhouse Hollow Lake. Belton - Killeen, Texas, August 17, 2008
 A waterfall near Old Lodging Railroad at Upper Otter Creek Overlook at mile 35 of Blue Ridge Parkway. Buena Vista, Virginia, May 17, 2007
 Virginia Field Park, with gazebo-style octogonal two-tiered bandstand (1895, Karen Renee Wiese Memorial Pavilion) in the center. Calvert, Texas, May 28, 2007
 Dark-green crustose lichen on limestone in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Gazebo-style octogonal two-tiered bandstand (1895) (Karen Renee Wiese Memorial Pavilion) in the center of Virginia Field Park. Calvert, Texas, January 28, 2007
 Buttermilk Falls. Delaware Water Gap, New Jersey, May 12, 2007
 Noccalula Falls. Gadsden, Alabama, February 1, 2007
 Meadow mushrooms Agaricus campestris on New Main Drive on campus of Texas A and M University. College Station, Texas, March 10, 2020
 Some dark-green crustose lichen on a limestone rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
 Meadow mushrooms (Agaricus campestris) on a lawn near New Main Drive on campus of Texas A and M University. College Station, Texas, January 17, 2020
 Pedernales Falls. Johnson City, Texas, December 24, 2007
 Pedernales Falls. Johnson City, Texas, November 10, 2007
 Dissected meadow mushrooms (Agaricus campestris) on a lawn near New Main Drive on campus of Texas A and M University. College Station, Texas, January 17, 2020
 Waterfalls above Pedernales Falls. Johnson City, Texas, December 24, 2007
 Cliffs above Pedernales Falls. Johnson City, Texas, December 24, 2007
 Pool of Pedernales Falls. Johnson City, Texas, December 24, 2007
 Macey Falls in Sangre de Cristo Mountains. Colorado, July 2, 2007
 Lake above Pedernales Falls. Johnson City, Texas, December 24, 2007
 Rocks above Pedernales Falls. Johnson City, Texas, November 10, 2007
 Stream above Pedernales Falls. Johnson City, Texas, November 10, 2007
 Riverbed above Pedernales Falls. Johnson City, Texas, November 10, 2007
 Pools of Pedernales Falls. Johnson City, Texas, November 10, 2007
 Chatfield Hollow Brook and a covered bridge in Chatfield Hollow State Park. Killingworth, Connecticut, June 6, 2004
 Chatfield Hollow Brook, view from a covered bridge in Chatfield Hollow State Park. Killingworth, Connecticut, June 6, 2004
 Riverbed rocks above Pedernales Falls. Johnson City, Texas, December 24, 2007
 Cypress pool below Pedernales Falls. Johnson City, Texas, December 24, 2007
 Cypress Pool below Pedernales Falls. Johnson City, Texas, November 10, 2007
 A cotton mill in Dunn s Falls Water Park. Meridian, Mississippi, May 20, 2007
 Dark brown frog peeking from a tree hollow near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 20, 2022
 Dark brown frog in a hollow of a large fallen oak near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 20, 2022
 Dark brown frog peeking from a hollow of a large fallen oak near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 20, 2022
 Close-up of a dark brown frog peeking from a tree hollow near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 20, 2022
 Deer Run Trail near Sedge Meadow in Lick Creek Park. College Station, Texas, September 16, 2007
 A meadow and aspens west from Horn Creek Ranch in Sangre de Cristo Mountains. Colorado, June 30, 2007
 A meadow near Post Oak Trail in Lick Creek Park after ice storm. College Station, Texas, January 17, 2007
 Deer Run Trail near Sedge Meadow in fog in Lick Creek Park. College Station, Texas, November 5, 2007
 Frozen Buttermilk Falls on Mountain Road in Delaware Water Gap. New Jersey, March 3, 2007
 A stop during a day hike around Garden Creek Falls, south from Casper. Wyoming, July 18, 2007
 Mechanisms of a grist mill in Dunns Falls Park. Meridian, Mississippi, February 1, 2007
 Icy meadow near Iron Bridge Trail in Lick Creek Park after ice storm. College Station, Texas, January 17, 2007
 Meadow pink flowers near Iron Bridge Trail in Lick Creek Park. College Station, Texas, May 27, 2007
 Gaywings flower (fringed polygala) on Buttermilk Falls Trail. Delaware Water Gap, New Jersey, May 12, 2007
 Trammel Crossing in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Iron Bridge Trail near Sedge Meadow in Lick Creek Park after ice storm. College Station, Texas, January 17, 2007
 Trout lilies on Meadow Trail in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 A farm west from Hidden Falls, view from Mountain Road. Delaware Water Gap, New Jersey, March 3, 2007
 North Lake Shore Drive from observatory at the top of Hancock Tower. Chicago, Illinois, September 11, 2007
 Meadow with black eyed susan flowers near Iron Bridge Trail in Lick Creek Park. College Station, Texas, May 27, 2007
 Cypress roots near Trammel Crossing in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Laurel Falls near Orange Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
 Lost Falls near Blue Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
 Cypresses east from Trammel Crossing in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Calypso bulbosa (fairy slipper) orchid flowers near Macey Falls in Sangre de Cristo Mountains. Colorado, July 2, 2007
 Cypress roots near Trammel Crossing at evening in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Crossing of Einstein Drive and Maxwell Lane, with Institute for Advanced Study in background. Princeton, New Jersey, March 7, 2007
 Meadow near Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, August 29, 2007
 Turquois pool of Bee Creek near Wolf Mountain Trail in Pedernales Falls State Park. Johnson City, Texas, November 10, 2007
 Dark brown spore print of brown field mushrooms Agaricus porphyrocephalus collected a day before on a lawn on New Main Drive on campus of Texas A and M University. College Station, Texas, February 1, 2020
 Chisos Mountains with traces of snow, view from Castalon Highway (Ross Maxwell Scenic Drive). Big Bend National Park, Texas, November 25, 2007
 Meadow vetchling (meadow pea, Lathyrus pratensis) in fields west from Deviatkino. Saint Petersburg, Russia, July 20, 2012
 Meadow vetchling (meadow pea, Lathyrus pratensis) in fields near Deviatkino in northern Saint Petersburg. Russia, July 25, 2016
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