title: [Studies on the taxonomy of Hydra circumcincta Schulze 1914, Hydra stallata Schulze 1914 and Hydra ovata Boecker 1920].
mesh_terms: D000818:Animals; D003063:Cnidaria / Q000145:classification*
vernacular_title: Untersuchungen zur Taxonomie von Hydra circumcincta Schulze 1914, Hydra stellata Schulze 1914 und Hydra ovata Boecker 1920.