Moschatel Adoxa moschatellina is one of the most easily-missed woodland spring flowers due to its small size and green flowers, but it's worth taking a close look at its inflorescence because it's really rather remarkable.
The inflorescence, in a two inch-tall stalk, is made up of five small flowers. Four face outwards like the faces of a townhall clock, giving the plant its alternative common name. Each of these has five petals and ten stamens.
The fifth flower points upwards and this one has four petals and eight stamens.
There's nothing else quite like it in the British flora.