psilophyton

Noun
  1. Any plant or fossil of the genus Psilophyton (synset 113238891)
    is a type of: tracheophyte, vascular plant - green plant having a vascular system: ferns, gymnosperms, angiosperms
    belongs to: genus psilophyton - type genus of the Psilophytaceae: genus of small wiry herbaceous Paleozoic plants with underground rhizomes and apical sporangia

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