Question: Which genus contains more species, Dennstaedtia or Delairea?
Sentence (from "Dennstaedtia"): Its best-known member is probably the temperate North-American hay-scented fern, "Dennstaedtia punctilobula" (pictured in the taxobox), which forms extensive clonal ground-cover colonies on level surfaces in the Appalachian area.
Relevant evidence: Yes