cliff brake(n = noun.plant) cliff-brake, rock brake - any of several small lithophytic ferns of tropical and warm temperate regions;
is a kind of fern
is a member of genus pellaea, pellaea
has particulars: coffee fern, pellaea andromedifolia, pellaea atropurpurea, purple rock brake, bird's-foot fern, pellaea mucronata, pellaea ornithopus

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