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A nearly-regular pentagon in yellow at the centre of this flower of white cistus.
A sleeping cat breaks the symmetry of this frieze of type *22∞, at the Palais at the Bah...
Leaves of black Carpinus (Ostrya carpinifolia), a xxx that can be found in xxx. The leaf, ...
Section of a seashell of Nautilus, a mollusc that had been considered extinct until 1829, ...
A compound leaf of Robinia (Robinia pseudoacacia). A photo of the leaf of Robinia pseudoac...
An elm-tree leaf (Ulmus sp.), this plant is easy to recognize thanks to the characteristic...
What have in common these flowers and their shadows?
A flower of Plumeria acuminata, an ornamental succulent plant. The photo shows a rough cyc...
