water fern

Any fern of a number of taxonomic groups:

Azolla filiculoides (Pacific mosquitofern)

Any fern of a number of taxonomic groups:

Cranfillia fluviatilis (syn. Blechnum fluviatile; ray water fern)

Any fern of a number of taxonomic groups:

Histiopteris incisa (bat's wing fern, oak fern)

Any fern of a number of taxonomic groups:

Lomaria nuda (syn. Blechnum nudum; fishbone water fern)

Any fern of a number of taxonomic groups:

Oceaniopteris cartilaginea (syn. Blechnum cartilagineum; soft water fern)

Any fern of a number of taxonomic groups:

Osmunda regalis (royal fern)

Any fern of a number of taxonomic groups:

Parablechnum wattsii (syn. Blechnum wattsii) (hard water fern)

Any fern of a number of taxonomic groups:

Regnellidium diphyllum (two-leaf water fern)

Any fern of a number of taxonomic groups:

Salvinia molesta (giant water fern)

Any fern of a number of taxonomic groups:

Telmatoblechnum indicum (syn. Blechnum indicum; swamp water fern)

Any fern of a number of taxonomic groups:

Salviniales, an order of aquatic ferns

Any fern of a number of taxonomic groups:

Austroblechnum lanceolatum (syn. Blechnum chambersii; lance water fern)

Any fern of a number of taxonomic groups:

Austroblechnum patersonii (syn. Blechnum patersonii; strap water fern)

Any fern of a number of taxonomic groups:

Austroblechnum penna-marina (syn. Blechnum penna-marina; alpine water fern)

Any fern of a number of taxonomic groups:

Bolbitis heudelotii (African water fern)