Not quite 😉 These are the maturing female archegonial heads of the Common Liverwort (Marchantia polymorpha subsp ruderalis). These are for sexual reproduction of the liverwort.
To get an idea of the scale of these small umbrella-like growths note the moss growing in the background. I am half expecting to see a famous moustached Italian plumber dressed in a bright red and blue uniform wearing a red cap with a big ‘M’ on it to come bottom bouncing into the frame.
Click on Common Liverwort to see more images and to learn more about this plant.
Rear garden, Staffordshire, England. May 2017.