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Noun: clover fern  klow-vu(r) furn
  1. Any of several water ferns of the genus Marsilea having four leaflets
    "The clover fern's four-leaf structure resembled a lucky clover";
    - pepperwort

Derived forms: clover ferns

Type of: aquatic fern, water fern

Part of: genus Marsilea, Marsilea