Which genus has more species, Echium or Ptilotus?
Echium: Echium is a genus of 60 species of flowering plant in the family Boraginaceae. Ptilotus:  All species are native to mainland Australia, although one species, "Ptilotus spathulatus" (R.Br.) Ptilotus:  An interactive key to the species of "Ptilotus" is available at KeyBase.
i don't know