Treebeard:
Five-Finger Fern (Adiantum aleuticum, Polypodiaceae) and fallen leaf of Bigleaf Maple (Acer macrophyllum, Aceraceae) - similar shape
Treebeard:
Unfolding new fronds of Western Bracken Fern (Pteridium aquilinum var. pubescens, Polypodiaceae)
Treebeard:
Western Bracken Fern (Pteridium aquilinum var. pubescens, Polypodiaceae) showing fall colors
Treebeard:
Western Bracken Fern (Pteridium aquilinum var. pubescens, Polypodiaceae), showing last green
Treebeard:
Aging fronds of Western Bracken Fern (Pteridium aquilinum var. pubescens, Polypodiaceae)
Treebeard:
Sporangia of a Leathery Grape Fern (Botrychium multifidum, Opioglossaceae) in the Oregon woods
Treebeard:
Bigelow's Spike-Moss (Selaginella bigelovii, Selaginellaceae) growing on a sandstone outcrop
Treebeard:
New fronds of California Polypody (Polypodium californicum, Polypodiaceae) ferns arising from Monterrey Shale rock
Treebeard:
Frond of a native Goldback Fern (Pentagramma triangularis, Polypodiaceae) showing gold backs
Treebeard:
Colony of native Goldback Fern (Pentagramma triangularis, Polypodiaceae) growing on a mossy bank