Source : WordNet®

leather fern
     n 1: stout tropical swamp fern (especially tropical America)
          having large fronds with golden yellow sporangia
          covering the undersides [syn: {golden fern}, {Acrostichum
          aureum}]
     2: widely distributed fern of tropical southern hemisphere
        having leathery pinnatifid fronds [syn: {leatherleaf fern},
         {ten-day fern}, {Rumohra adiantiformis}, {Polystichum
        adiantiformis}]