Nature Photos

Image 1. Doodia aspera, called the prickly rasp fern or hacksaw fern
Photograph from a botanical garden

Image 2. Doodia aspera, called the prickly rasp fern or hacksaw fern
Photograph from a botanical garden

Image 3. Underside of Doodia aspera, called the prickly rasp fern or hacksaw fern
Photograph from a botanical garden

Image 4. Underside of Doodia aspera, called the prickly rasp fern or hacksaw fern
Photograph from a botanical garden

Image 5. Underside of Doodia aspera, called the prickly rasp fern or hacksaw fern
Photograph from a botanical garden

Image 6. Dryopteris arguta, called the California wood fern, shield fern or coastal wood fern
Photograph from the Sierra Nevada, California

Image 7. Underside of Dryopteris arguta, called the California wood fern, shield fern or coastal wood fern
Photograph from the Sierra Nevada, California

Image 8. Dryopteris expansa, called the common wood fern, alpine buckler fern
northern buckler-fern, spreading wood fern or spreadingwood fern
Photograph from a botanical garden

Image 9. Dryopteris expansa, called the common wood fern, alpine buckler fern
northern buckler-fern, spreading wood fern or spreadingwood fern
Photograph from a botanical garden

Image 10. Underside of Dryopteris expansa, called the common wood fern, alpine buckler fern
northern buckler-fern, spreading wood fern or spreadingwood fern
Photograph from a botanical garden

Image 11. Underside of Dryopteris expansa, called the common wood fern, alpine buckler fern
northern buckler-fern, spreading wood fern or spreadingwood fern
Photograph from a botanical garden

Image 12. Underside of Dryopteris expansa, called the common wood fern, alpine buckler fern
northern buckler-fern, spreading wood fern or spreadingwood fern
Photograph from a botanical garden

Image 13. Dryopteris filix-mas, called the male fern
Photograph from a botanical garden

Image 14. Dryopteris filix-mas, called the male fern
Photograph from a botanical garden

Image 15. Underside of Dryopteris filix-mas, called the male fern
Photograph from a botanical garden

Image 16. Underside of Dryopteris filix-mas, called the male fern
Photograph from a botanical garden

Image 17. An unidentified species of Dryopteris, or wood fern
Photograph from the Sierra Nevada, California

Image 18. Underside of an unidentified species of Dryopteris, or wood fern
Photograph from the Sierra Nevada, California

Image 19. Equisetum arvense, called the field horsetail, common horsetail,
common horsetail rush or mare's tail
Photograph from the Sierra Nevada, California

Image 20. Equisetum telmateia subspecies braunii, called the giant horsetail or giant horse tail
Photograph from a botanical garden

Image 21. Equisetum telmateia subspecies braunii, called the giant horsetail or giant horse tail
Photograph from a botanical garden

Image 22. Equisetum telmateia subspecies braunii, called the giant horsetail or giant horse tail
Photograph from a botanical garden

Image 23. An unidentified species of Equisetum, or horsetail in British Columbia
Photograph by Sylvia Sharnoff

Image 24. Isoetes sp., a species of wild quillwort
Photograph from the Sierra Nevada, California