A flower of Amaryllis, a bulb-forming ornamental herbaceous plant of exotic origin. From t...
Ophrys fuciflora, known as bee orchid, because of its mimetic strategy to attract the male...
From the point of view of symmetry, this flower has a three-dimensional prismatic symmetry...
An ornamental specimen of viola. From the point of view of symmetry, it has (roughly!) one...
A poisonous herbaceous plant belonging to the family of the Liliaceae that growths in humi...
This autogrill on the motorway Milan-lakes has a symmetry of type D3, the same symmetry of...
This autogrill on the motorway Milan-lakes has a symmetry of type D3, the same symmetry of...
other prismal groups