Derbesia

Derbesia is a genus of green algae in the family Derbesiaceae. The plant was originally known from different names applied to its larger sporophyte, "Derbesia", and its less conspicuous gametophyte, Halicystis. "Derbesia" was successfully cultured in the laboratories of German phycologist Peter Kornmann to learn that both it and the plant "Halicystis" were different parts of the life cycle of the same organism.