bird's-foot fern

noun

Definition of bird's-foot fern

: a rock brake (Pellaea ornithopus) of the Pacific coast of North America having some of the lower pinnules replaced by secondary pinnae each consisting of three sessile pinnules arranged so as to suggest a bird's foot

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“Bird's-foot fern.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bird%27s-foot%20fern. Accessed 4 Dec. 2020.

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