This Adiantum is everything you'd want from an elegant fern, with its arching, wiry, black stems and pale green, triangular fronds. It's often grown in terrariums where humidity levels are high. This charming and graceful fern is also suitable for bathrooms and kitchens. It is native to South America and its common name, Maidenhair fern, comes from its shiny, dark leafstalks, which resemble human hair. This fern typically grows up to 40 cm tall and 50 cm wide.