genus Pellaea
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| Noun | 1. | genus Pellaea - genus of chiefly small rock-loving ferns; in some classification systems it is placed in the family Polypodiaceae or Adiantaceae fern genus - genera of ferns and fern allies family Pteridaceae, Pteridaceae - one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; Pteridaceae is itself in turn sometimes further subdivided cliff brake, cliff-brake, rock brake - any of several small lithophytic ferns of tropical and warm temperate regions coffee fern, Pellaea andromedifolia - evergreen fern of California and Baja California button fern, Pellaea rotundifolia - fern of New Zealand and Australia having trailing fronds with dark green buttonlike leaflets |
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