We have patches of wood anemones here and there in our garden.

Today I learned that the white petals on anemone flowers are not called petals, because petals are petals only when they are clearly distinguishable from sepals (the green little leaves behind the petals). When they are not, they are called tepals.

I also learned that the number of tepals in wood anemones varies and is normally six to seven, but can be eight to ten on rare occasions, so this flower with its eight tepals – which looked like any other anemone flower to me when I was photographing it – is a bit of a rarity.