With leaves that look and feel more like a cow's tongue, it's hard to imagine that these are really ferns. Many books claim that Pyrrosia lingua isn't winter hardy here, but we grow only uneducated ferns that can't read gardening books. The hard rhizome grows along the ground and the leaves arise singly from it. The tongue-shaped leaves have a unique, cardboard-like texture with a felty backside and eventually make a nice evergreen mass. Pyrrosia prefers to grow on a steep slope or somewhere where the self-attaching rhizomes can adhere to a vertical surface.