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Burrows, J.E. (1990) Southern African Ferns and Fern Allies. Frandsen, Sandton.
Roux, J.P. (2001) Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13
Schelpe, E.A.C.L.E. (1970) Pteridophyta FZ
Terrestrial, heterosporous plants, occurring in aquatic or seasonally wet habitats. Stem 2- or 3-lobed. Leaves in a rosette; leaf base spathulate with a membranous margin and a delicate triangular ligule on adaxial surface where leaf narrows. Worldwide: 1 genus and c.150 species, cosmopolitan apart from the Pacific Islands. |
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| Isoetes L. |
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