👉 Lacustria, a genus of freshwater plants, is an ancient and diverse group that includes over 200 species. These plants were originally found in Lake Michigan in the United States. The term "lacustrian" comes from the Latin word "lactos," which means "water." Lacustrians are characterized by their ability to grow well in water, as they often have a thick and sticky sap that helps them survive during periods of drought or flooding. Additionally, lacust