Hugh Knott:
Asplenium adiantum-nigrum (Black Spleenwort)
Hugh Knott:
Asplenium marinum (Sea Spleenwort)
Hugh Knott:
Asplenium marinum (Sea Spleenwort)
Hugh Knott:
Asplenium marinum (Sea Spleenwort)
Hugh Knott:
Asplenium scolopendrium (Hart's-tongue)
Hugh Knott:
Ophioglossum vulgatum (Adder's-tongue)
Hugh Knott:
Polypodium cambricum (Southern Polypody)
Hugh Knott:
Polystichum aculeatum (Hard Shield-fern)
Hugh Knott:
Polystichum setiferum (Soft Shield-fern)
Hugh Knott:
Asplenium trichomanes (Maidenhair Spleenwort)