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Bald Cypress tree swamp near Bishopville, South Carolina
Bald Cypress tree swamp near Bishopville, South Carolina
Clavaria ligula (Clavariadelphus ligula)
Desert tower in the Grand Canyon, Arizona
Giant cactus in the desert in Southern Arizona
Giant cactus in the desert in Southern Arizona, nearer view showing top
Gnarled Pine tree at Bryce Canyon National Park
Gnarled tree and rock cliff at Bryce Canyon National Park
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
Lemna polyriza (Spirodela polyrhiza) and Wolfia
Lemna polyriza (Spirodela polyriza)
Lemna trisulca
Michigan sand dunes showing ripple marks
Michigan sand dunes showing ripple marks
Parmelia latissima
Peltigera aphthosa
Peltigera polydactyla
Pettigera aphthosa