What refers to more species, Plantago or Metasequoia?
Plantago: Plantago is a genus of about 200 species of small, inconspicuous plants commonly called plantains or fleaworts. Metasequoia: Metasequoia (dawn redwood) is a fast-growing, deciduous tree, and the sole living species, "Metasequoia glyptostroboides", is one of three species of conifers known as redwoods.
i don't know