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Isoetes
Genus of vascular plants in the family Isoetaceae / From Wikipedia, the free encyclopedia
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Isoetes, commonly known as the quillworts, is a genus of lycopod. It is the only living genus in the family Isoetaceae and order Isoetales. There are currently 192 recognized species,[1] with a cosmopolitan distribution mostly in aquatic habitats but with the individual species often scarce to rare. Species virtually identical to modern quillworts have existed since the Jurassic epoch,[2] though the timing of the origin of modern Isoetes is subject to considerable uncertainty.[3]
Isoetes | |
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Isoetes tegetiformans with U.S. penny for scale | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Lycophytes |
Class: | Lycopodiopsida |
Order: | Isoetales |
Family: | Isoetaceae |
Genus: | Isoetes L. |
Species | |
See text |
The name of the genus may also be spelled Isoëtes. The diaeresis (two dots over the e) indicates that the o and the e are to be pronounced in two distinct syllables. Including this in print is optional; either spelling (Isoetes or Isoëtes) is correct.[4]