Herman Giethoorn:
Ostrich Fern, Matteuccia struthiopteris (3)
Herman Giethoorn:
Ostrich Fern, Matteuccia struthiopteris (4)
Herman Giethoorn:
Bracken, Pteridium aquilinum
Herman Giethoorn:
Bracken, Pteridium aquilinum
Herman Giethoorn:
Bracken, Pteridium aquilinum
Herman Giethoorn:
Bracken, Pteridium aquilinum
Herman Giethoorn:
Bracken, Pteridium aquilinum
Herman Giethoorn:
Bracken, Pteridium aquilinum
Herman Giethoorn:
Bracken, Pteridium aquilinum (1)
Herman Giethoorn:
Bracken, Pteridium aquilinum (2)
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides, fertile leaflets (4)
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides, fertile leaflets (3)
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides (3)
Herman Giethoorn:
Christmas Fern, Polystichum acrostichoides, fertile leaflets (12)
Herman Giethoorn:
Maidenhair Ferns, Adiantum pedatum
Herman Giethoorn:
Maidenhair Fern, Adiantum pedatum
Herman Giethoorn:
Maidenhair Fern, Adiantum pedatum
Herman Giethoorn:
Maidenhair Fern, Adiantum pedatum
Herman Giethoorn:
Maidenhair Fern, Adiantum pedatum, fertile leaflets
Herman Giethoorn:
Maidenhair Fern, Adiantum pedatum, sori (4)
Herman Giethoorn:
Maidenhair Fern, Adiantum pedatum, sori (6)
Herman Giethoorn:
Maidenhair Fern, Adiantum pedatum, sori (6)A
Herman Giethoorn:
Sensitive Fern, Onoclea sensibilis (1)
