Parablechnum cordatum (syn. Blechnum chilense)

A particularly robustly handsome South American evergreen fern producing very bold, very leathery, darkest green fronds with many fat opposite pinnae. Slowly spreads to form patches, with fronds reaching about 1m, or up to 1.5m if moist and sheltered. Humus rich neutral to acid soil in semi-shade, or sun if moist. Hardy throughout the UK.