A section of the ovary of a lily (Lilium sp.), photographed under an optic microscope. The...
Section of the flower of Lilium sp.. From the centre to the external regions we recognize:...
Unicellular alga covered in silica. The photo of this diatom seen under an optical microsc...
This drawing has been used for an exhibit of Simmetria, giochi di specchi - Symmetry, play...
This mark (that can be seen also from a further distance) is an example of a rosette with ...
These windows in Corso Magenta in Milan are characterized by the scheme of the Borromean r...
A flower of Tradescantia sp.. A photo like this, taken from the right point of view, evoke...
A clover (Trifolium sp.), an annual or perennial herbaceous plant, whose leaves are compos...
The ovary of a lily (Lilium sp.), photographed under an optic microscope. The photo evokes...
This road sign gives an example of a rosette with a dihedral symmetry (D3).
