clover fern(n = noun.plant) pepperwort - any of several water ferns of the genus Marsilea having four leaflets;
is a kind of aquatic fern, water fern
is a member of genus marsilea, marsilea
has particulars: common nardoo, marsilea drummondii, nardo, nardoo, marsilea quadrifolia, water clover

adder's fern, adder's tongue fern, alabama lip fern, alpine clover, alpine lady fern, american maidenhair fern, american parsley fern, american wall fern, annual fern, aquatic fern, asparagus fern, ball fern, bamboo fern, basket fern, bead fern, bear's-paw fern, beech fern, bermuda maidenhair fern, berry fern, bird's foot clover, bird's nest fern, bird's-foot fern, black tree fern, bladder fern, boston fern, boulder fern, braun's holly fern, bristle fern, brittle bladder fern, brittle fern, brittle maidenhair fern, broad beech fern, buckler fern, buffalo clover, bulblet bladder fern, bulblet fern, bush clover, button fern, california fern, calvary clover, canary island hare's foot fern, carolina pond fern, central american strap fern, chain fern, christmas fern, cinnamon fern, climbing bird's nest fern, climbing fern, climbing maidenhair fern, clover, coffee fern, common staghorn fern, cow-tongue fern, crape fern, creeping fern, crepe fern, crimson clover, curly grass fern, dagger fern, daisy-leaved grape fern, daisyleaf grape fern, deer fern, ditch fern, dutch clover, elkhorn fern, european parsley fern, evergreen wood fern, fan fern, farley maidenhair fern, felt fern, fern, fern ally, fern family, fern genus, fern palm, fern rhapis, fern seed, fiddlehead fern, film fern, filmy fern, five-fingered maidenhair fern, floating fern, florida strap fern, flower-cup fern, flowering fern, fragile fern, fragrant cliff fern, fragrant shield fern, fragrant wood fern, giant fern, giant scrambling fern, glade fern, glory fern, gold fern, golden fern, goldie's fern, goldie's shield fern, goldie's wood fern, grape fern, grass fern, greek clover, hairy lip fern, hand fern, hard fern, hare's-foot bristle fern, hare's-foot fern, hart's clover, hart's-tongue fern, hartford fern, hay-scented fern, holly fern, holy clover, hop clover, in clover, indian button fern, interrupted fern, italian clover, jap clover, japan clover, japanese clover, jersey fern, kidney fern, killarney fern, king fern, lace fern, lady fern, leather fern, leatherleaf fern, leatherleaf wood fern, leathery grape fern, licorice fern, limestone fern, lip fern, long beech fern, maidenhair fern, male fern, marginal wood fern, marsh fern, massachusetts fern, meadow fern, mosquito fern, mountain bladder fern, mountain fern, mountain male fern, mountain parsley fern, musk clover, narrow beech fern, narrow-leaved strap fern, nebraska fern, new york fern, nonesuch clover, northern beech fern, northern holly fern, northern oak fern, oak fern, oleander fern, ostrich fern, pin clover, pine fern, potato fern, prickly shield fern, prince-of-wales fern, purple clover, rabbit's-foot fern, rasp fern, rattlesnake fern, red clover, resurrection fern, ribbon fern, royal fern, sago fern, scale fern, scaly fern, scented fern, sea fern, seed fern, sensitive fern, serpent fern, shield fern, shuttlecock fern, silver fern, silver tree fern, skeleton fork fern, smooth lip fern, snake fern, snuffbox fern, soft shield fern, soft tree fern, southern beech fern, southwestern lip fern, spider fern, squirrel's-foot fern, stag-horn fern, staghorn fern, stinking clover, strap fern, sweet clover, sweet fern, sword fern, ten-day fern, tongue fern, toothed sword fern, tree fern, umbrella fern, venus'-hair fern, virginia chain fern, walking fern, wall fern, water clover, water fern, western holly fern, whisk fern, white clover, white sweet clover, winter fern, wood fern, wooly lip fern, yellow sweet clover