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A heap of leaves. Some leaves evoke a dihedral symmetry of type D1.
A flower of Plumeria acuminata, an ornamental succulent plant. The photo shows a rough cyc...
A seed of pea (Pisum sativum), a plant belonging to the family of the Papilionaceae. If we...
Plant with a succulent trunk with photosynthetic function and leaves transformed in thorns...
Unicellular alga covered in silica. The photo of this diatom seen under an optical microsc...
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...
A flower of Plumbago coerulea. A photograph like this, taken from the right point of view,...
Plant with a succulent trunk with photosynthetic function. The leaves are transformed in t...
In this photo, taken under an electronic microscope, we can see various examples of symmet...
