Water fern

Water fern is a common name for several plants and may refer to:

• Salviniales, an order of aquatic ferns
• Azolla filiculoides
• Blechnum cartilagineum, or soft water fern
• Blechnum chambersii, lance water fern
• Blechnum fluviatile, or ray water fern
• Blechnum indicum, or swamp water fern
• Blechnum nudum, or fishbone water fern
• Blechnum patersonii, or strap water fern
• Blechnum penna-marina, or alpine water fern
• Blechnum wattsii, or hard water fern
• Bolbitis heudelotii, or African water fern
• Histiopteris incisa
• Osmunda regalis
• Regnellidium diphyllum, or two-leaf water fern
• Salvinia molesta, or giant water fern