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rock brake

any of several small lithophytic ferns of tropical and warm temperate regions
同义词： cliff brake cliff-brake
dwarf deciduous lithophytic ferns
chiefly lithophytic or epiphytic fern of North America and east Asia
同义词： rock polypody American wall fern Polypodium virgianum

rock-brake珠蕨属

any of several small lithophytic ferns of tropical and warm temperate regions

同义词：cliff brakecliff-brake

dwarf deciduous lithophytic ferns

chiefly lithophytic or epiphytic fern of North America and east Asia

同义词：rock polypodyAmerican wall fernPolypodium virgianum

1.
N（名词） any of various ferns of the genera Pellaea and Cryptogramma, which grow on rocky ground and have sori at the ends of the veins 球蕨属

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