Ceratopteris (Greek, horned fern). Ceratopteridaceae. Very succulent tropical ferns, forming also a distinct family. They are the only truly aquatic plants among true ferns and grow floating or rooted under water in the mud or sometimes only occasionally flooded. The lvs. are borne in rosettes, the sterile spreading, often floating, the fertile more erect, 2-4- pinnate, with very slender rolled-up pod-like segms.: sporangia very large, borne separately along the veins and covered by the revolute margins somewhat as in Pteris.-Species very few. Best grown by planting in pots, slightly submerged. Reproduced by buds which arise from all parts of the lvs. New plants must be developed each season. Useful in ponds and aquaria.
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Ceratopteris (Greek, horned fern). Ceratopteridaceae. Very succulent tropical ferns, forming also a distinct family. They are the only truly aquatic plants among true ferns and grow floating or rooted under water in the mud or sometimes only occasionally flooded. The lvs. are borne in rosettes, the sterile spreading, often floating, the fertile more erect, 2-4- pinnate, with very slender rolled-up pod-like segms.: sporangia very large, borne separately along the veins and covered by the revolute margins somewhat as in Pteris.-Species very few. Best grown by planting in pots, slightly submerged. Reproduced by buds which arise from all parts of the lvs. New plants must be developed each season. Useful in ponds and aquaria.