Complex sentence: Theodor Heinrich Hermann von Heldreich was a German botanist, who was born on 3 March 1822 in Dresden (the son of Conrad Friedrich Robert Heldreich and Amalia Charlotte Humbold) and died on 7 September 1902 in Athens.
Split into simpler sentences: Theodor Heinrich Hermann von Heldreich (3 March 1822--7 September 1902) was a German botanist. He was born in Dresden (the son of Conrad Friedrich Robert Heldreich and Amalia Charlotte Humbold) and died on in Athens.