Noun christmas green has 1 sense
  1. ground pine, Christmas green - any of several club mosses having long creeping stems and erect branches
    --1 is a kind of club moss, club-moss, lycopod
    --1 has particulars:
     running pine, Lycopodium clavitum; ground cedar, staghorn moss, Lycopodium complanatum; ground fir, princess pine, tree clubmoss, Lycopodium obscurum; foxtail grass, Lycopodium alopecuroides
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