The family Plantaginaceae was named and described by Antoine Laurent de Jussieu in Genera Plantarum in 1789.
Plants of the World Online lists 99 accepted genera in this family commonly known as the Plantain family. The Wikipedia article names 94 genera with a total of about 1,900 species in several different tribes. It’s complicated and I am sure there will still be more reclassifying ahead.
I had somehow thought that the Hosta and Plantago genera were closely related but not according to what I am currently reading. Maybe I thought that because the common name for Hosta is Plantain Lily and the common name for members of the Plantago are Plantain. Of course, there is also the “cooking” plantain (bananas) which are members of the Musa genus. The genus Hosta is currently in the family Asparagaceae and subfamily family Agavoideae.
For more information about this family of plants, please click on the links below. The links take you directly to the information about the family.