Complex sentence: The protected dune plant grows to a height of 20 to 60 cm. Although widespread, it is considered endangered as, for instance in Germany, its occurrence has been greatly reduced throughout and has become extinct in some regions.
Split into simpler sentences: The protected dune plant grows to a height of 20 to 60 cm and although widespread it is considered endangered. So, for instance, in Germany its occurrence has been greatly reduced throughout and has become extinct in some regions.