It is familiar to almost every one, that in a flower the relative position of the sepals, petals, stamens, and pistils, as well as their intimate structure, are intelligible on the view that they consist of metamorphosed leaves, arranged in a spire.
Ia edonork dakien moduan, lorearen sepalo, petalo, estamine eta pistiloen kokaera erlatiboa, baita berauen barneko egitura ere, espiralean lerroturik dauden hosto metamorfizatuak direlako azaltzen dira.