
Ferns
Many families here: Aspleniaceae (Spleenwort family), Athyriaceae (Lady fern family), Azollaceae (Mosquito fern family), Blechnaceae (Deer fern family), Dennstaedtiaceae (Bracken family), Dryopteridaceae (Wood fern family), Equisetaceae (Horsetail family), Marsileaceae (Marsilea family), Ophioglossaceae (Adder's-tongue family), Polypodiaceae (Polypody family), Pteridaceae (Brake family), Salviniaceae (Floating-fern family), Thelypteridaceae (Thelypteris family), and Woodsiaceae (Cliff fern family). This is the complete list of California native fern families. Only the ones shown above in bold face have representatives here.
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Adiantum aleuticum (five-fingered fern) growing at the darkest back end of the gorge. I didn't recognize these small plants with fewer than the requisite number of fingers, but some fuller ones nearby clued me in.