Adiantum venustum
Has received the RHS Award of Garden Merit. (1993)
This species of Maidenhair Fern has a delicate appearance, with black stems holding very small leaves of soft green. It forms a low, slow-spreading patch that is in no way invasive. Excellent foliage for cut flower arrangements. A beautiful edging or groundcover plant. Also great in pots. This takes a couple of years to settle in, appreciating a rich soil that stays evenly moist. Not a good choice for dry shade under thirsty types of trees. Clumps may be divided after 4 to 5 years. Semi-evergreen in mild winter regions. Royal Horticultural Society Award of Garden Merit (1993). [http://www.perennials.com/plants/adiantum-venustum.html]