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Zygadenus
Wolffia columbiana
Water oaks on a street near Stetson University in Deland, Florida
Water Oaks and Spanish Moss near Summerton, South Carolina
Twining Bittersweet on Boxelder and Ironwood
Tracks in the Michigan sand dunes
Tracks in the Michigan sand dunes
Timber-line trees at Longs Peak, Colorado
Timber-line trees at Longs Peak, Colorado
Timber-line trees at Longs Peak, Colorado
Timber-line trees at Longs Peak, Colorado
Timber-line trees at Longs Peak, Colorado
Timber-line tree on Trail Ridge Road in Rocky Mountain Park
Timber-line tree on Trail Ridge Road in Rocky Mountain Park
Timberline tree at Bear Lake in Rocky Mountain Park
Timber-line tree, another, above Bear Lake in Rocky Mountain Park
Timber-line tree above Bear Lake in Rocky Mountain Park
Spirodela polyrhiza, near view
Spirodela polyrhiza
Scirpus validus
Rosa acicularis
Polygala sanguinea
Polygala cruciata
Pinus strobus (Strobus strobus) and Dr. Hayden
Pinus strobus (Strobus strobus) and Dr. Hayden
Pettigera aphthosa
Peltigera polydactyla
Peltigera aphthosa
Parmelia latissima
Michigan sand dunes showing ripple marks
Michigan sand dunes showing ripple marks
Lemna trisulca
Lemna polyriza (Spirodela polyriza)
Lemna polyriza (Spirodela polyrhiza) and Wolfia
Gnarled tree at the rim of canyon showing cedar breaks
Gnarled tree at the rim of canyon showing cedar breaks
Gnarled tree at the rim of canyon showing cedar breaks
Gnarled tree and rock cliff at Bryce Canyon National Park
Gnarled Pine tree at Bryce Canyon National Park
Giant cactus in the desert in Southern Arizona, nearer view showing top
Giant cactus in the desert in Southern Arizona
Desert tower in the Grand Canyon, Arizona
Clavaria ligula (Clavariadelphus ligula)
Bald Cypress tree swamp near Bishopville, South Carolina
Bald Cypress tree swamp near Bishopville, South Carolina
Bald Cypress trees in the Japanese Gardens
Bald Cypress trees in the Japanese Gardens
Bald Cypress trees in the Japanese Gardens
Bald Cypress trees in the Japanese Gardens
Bald Cypress trees in the Japanese Gardens