cryptogam

/ˈkrɪptəˌɡæm/
noun
  1. A plant that reproduces by spores instead of seeds or flowers, such as ferns, mosses, and algae.
    • Mosses are common cryptogams that grow on damp forest floors.
    • In biology class, we learned that a fern is a cryptogam because it doesn't produce flowers or seeds.
    • The scientist studied cryptogams like algae and liverworts in the pond ecosystem.
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