Which genus has more species Adiantum or Nasturtium ?
Adiantum Adiantum , the walking fern or maidenhair fern, is a genus of about 250 species of ferns in the Vittarioideae subfamily of the family Pteridaceae, though some researchers place it in its own family, "Adiantaceae". The genus name comes from Greek, meaning "not wetting", referring to the fronds' ability to shed water without becoming wet.
Adiantum raddianum Adiantum raddianum also known as maidenhair fern is one of the most popular ferns to grow indoors. Its common name comes from its shiny, dark leafstalks that resembles human hair. The triangular fronds are semi-erect in the beginning then droop gracefully as they age and can be up to 12 in long by 6 in wide.