Geastrum lageniforme has the English name 'Flask Earthstar' as the developing fungus is shaped like a flask or onion. It is small, the spore-sac just 15mm diam. and the fb. 35mm across. Geastrum triplex is much larger and develops a collar.
It is very seldom recorded but was found at the same spot in Pembrey Country Park two years ago. It is a 'near threatened' RDL species.
The photo is not very sharp as the weather dull and wet!