walking fern
noun
1- a North American fern with long slender tapering fronds that form new plantlets where the tips touch the ground, typically growing on limestone根叶铁角蕨。
1.1
- Asplenium (or Camptosorus) rhizophyllus, family Aspleniaceae.拉丁名Asplenium rhizophyllus 或 Camptosorus rhizophyllus,铁角蕨科。