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Asarum

Wild ginger or Asarum is probably more well-known by wildflower enthusiasts or hikers than by gardeners. As a forest-floor wildflower, they are common throughout eastern North America, the Pacific Northwest, much of western Europe and east Asia. In fact, of the 70 or so species, the vast majority hail from east Asia. There are 8 species in North America and only one occurs in Europe.

Adiantum

Adiantum (pronounced /ˌædiˈæntəm/), the maidenhair ferns, is a genus of about 200 species of ferns in the family Pteridaceae, though some researchers place it in its own family, Adiantaceae. The genus name comes from the Greek, meaning "not wetting," referring to the fronds' ability to shed water without becoming wet.