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Quercus rubra

a single leaf hanging from a tree branch

a large body of water with mountains in the background

circa 1800: Equisetum umbrosum, or horse tail fern. (Photo by Hulton Archive/Getty Images)

a group of trees sitting on top of a rocky hillside

a leaf laying on the ground in the grass

a close up of a leaf

a close up of a flower on a plant

circa 1800: Crocus nudiflorus. (Photo by Hulton Archive/Getty Images)

a bird perched on top of a tree branch

circa 1800: Common frog-bit. (Photo by Hulton Archive/Getty Images)

a bird sitting on top of a tree branch

circa 1800: Three species of fern, including asplenium marinum, asplenium ruta-muraria and ceterach officinarum. (Photo by Hulton Archive/Getty Images)

a very large tree in the middle of a forest

a close up of a leaf

a no dogs allowed sign in a park

a bird perched on top of a tree branch

a branch of a tree with pink and yellow flowers

a large body of water with mountains in the background

a close up of a tree in a forest

a group of trees sitting on top of a rocky hillside

circa 1800: Pilularia globulifera, or pillwart. (Photo by Hulton Archive/Getty Images)

green and brown plant during daytime

circa 1800: Common frog-bit. (Photo by Hulton Archive/Getty Images)

pink and white flower in close up photography

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a mushroom growing out of the side of a rock

a close up of a stone wall with moss growing on it

a close up view of a rock face

a close up of two footprints in the sand

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a mushroom growing out of the side of a rock

a close up of a stone wall with moss growing on it

a close up view of a rock face

a close up of two footprints in the sand

a close up view of a tree trunk

a close up of the bark of a tree

A Trygon Strogylopterus of the ray family, circa 1850. Engraving by Lizars after Stewart. (Photo by Hulton Archive/Getty Images)

a bird is perched on a wooden fence

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