Which genus has more species, Echium or Ptilotus?
Echium: Echium is a genus of 60 species of flowering plant in the family Boraginaceae. Ptilotus: Ptilotus R.Br. Ptilotus:  All species are native to mainland Australia, although one species, "Ptilotus spathulatus" (R.Br.) Ptilotus:  In family-level phylogenetic studies, "Ptilotus" has been placed within a clade informally known as the 'aervoids'.
i don't know