Which genus has more species Adiantum or Nasturtium ?
Nasturtium (genus) Nasturtium is a genus of seven plant species in the family Brassicaceae (cabbage family), best known for the edible watercresses "Nasturtium microphyllum" ("Rorippa microphylla") and "Nasturtium officinale" ("R. nasturtium-aquaticum"). "Nasturtium" was previously synonymised with "Rorippa", but molecular evidence supports its maintenance as a distinct genus more closely related to "Cardamine" than to "Rorippa" "sensu stricto" (Al-Shehbaz & Price, 1998; Al-Shehbaz, Beilstein & Kellogg, 2006). Yellowcress is a common name for plants in this genus.
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.