Water fern
Water fern is a common name for several plants and may refer to:Salviniales, an order of aquatic ferns Austroblechnum lanceolatum, syn. Blechnum chambersii, lance water fern Austroblechnum patersonii, syn. Blechnum patersonii, or strap water fern Austroblechnum penna-marina, syn. Blechnum penna-marina, or alpine water fern Azolla filiculoides Bolbitis heudelotii, or African water fern Cranfillia fluviatilis, syn. Blechnum fluviatile, or ray water fern Histiopteris incisa Lomaria nuda, syn. Blechnum nudum, or fishbone water fern Oceaniopteris cartilaginea, syn. Blechnum cartilagineum, or soft water fern Osmunda regalis Parablechnum wattsii, syn. Blechnum wattsii, or hard water fern Regnellidium diphyllum, or two-leaf water fern Salvinia molesta, or giant water fern Telmatoblechnum indicum, syn. Blechnum indicum, or swamp water fern
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