Christmas fern sori full of spores on the underside of pinna (Polystichum acrostichoides)
Sorus full of spores at 100x
Fern spores at 100x
Fern spores at 400x
Fern gametophyte (haploid) at 40x
Fern antheridia full of gametes at 400x
Archegonia with egg cell at 400x
Newly emerged fern sporophyte (diploid) at 100x
Fern gametophyte giving rise to sporophyte (diploid) at 20x
Fern gametophytes and sporophytes on rock wall
Several gametophytes and sporophytes in highly shaded area (Pteris multifida)
Fern fiddle head (sporophyte)
Christmas fern fronds (Polystichum acrostichoides) in Great Smoky Mountains National Park
Field of bracken ferns in recently burned area inside Yosemite National Park (Pteridium aquilinum)
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