Which genus has more species, Echium or Ptilotus?
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'. Ptilotus:  An interactive key to the species of "Ptilotus" is available at KeyBase.
i don't know