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  2. Equisetum - Wikipedia

    en.wikipedia.org/wiki/Equisetum

    Equisetum (/ ˌ ɛ k w ɪ ˈ s iː t əm /; horsetail) is the only living genus in Equisetaceae, a family of vascular plants that reproduce by spores rather than seeds. [2]Equisetum is a "living fossil", the only living genus of the entire subclass Equisetidae, which for over 100 million years was much more diverse and dominated the understorey of late Paleozoic forests.

  3. Equisetum arvense - Wikipedia

    en.wikipedia.org/wiki/Equisetum_arvense

    Equisetum arvense, the field horsetail or common horsetail, is an herbaceous perennial plant in the Equisetidae (horsetails) sub-class, native throughout the arctic and temperate regions of the Northern Hemisphere.

  4. Equisetum × schaffneri - Wikipedia

    en.wikipedia.org/wiki/Equisetum_×_schaffneri

    Equisetum × schaffneri is a horsetail (family Equisetaceae) which is believed to be an ancient, naturally occurring, widely distributed hybrid between Equisetum giganteum and Equisetum myriochaetum, all from the Neotropics. At each node there are as many as nineteen branchlets, each curving downward and then upward, and up to 18 inches (45 cm ...

  5. Equisetidae - Wikipedia

    en.wikipedia.org/wiki/Equisetidae

    Equisetidae is one of the four subclasses of Polypodiopsida (ferns), a group of vascular plants with a fossil record going back to the Devonian. They are commonly known as horsetails . [ 2 ] They typically grow in wet areas, with whorls of needle-like branches radiating at regular intervals from a single vertical stem.

  6. Equisetaceae - Wikipedia

    en.wikipedia.org/wiki/Equisetaceae

    Equisetites is a "wastebin taxon" uniting all sorts of large horsetails from the Mesozoic; it is almost certainly paraphyletic and would probably warrant being subsumed in Equisetum. But while some of the species placed there are likely to be ancestral to the modern horsetails, there have been reports of secondary growth in other Equisetites ...

  7. Equisetum hyemale - Wikipedia

    en.wikipedia.org/wiki/Equisetum_hyemale

    Equisetum hyemale (rough horsetail [2]) is an evergreen perennial herbaceous pteridophyte in the horsetail family Equisetaceae native to Eurasia and Greenland. It was formerly widely treated in a broader sense including a subspecies (subsp. affine ) in North America, but this is now treated as a separate species, Equisetum praealtum .

  8. Equisetum laevigatum - Wikipedia

    en.wikipedia.org/wiki/Equisetum_laevigatum

    Equisetum laevigatum is a species of horsetail in the family Equisetaceae. [ 2 ] [ 3 ] It is known by the common names smooth horsetail [ 4 ] and smooth scouring rush . This plant is native to much of North America except for northern Canada and southern Mexico.

  9. Equisetales - Wikipedia

    en.wikipedia.org/wiki/Equisetales

    Equisetales is an order of subclass Equisetidae with only one living family, Equisetaceae, containing the genus Equisetum (horsetails), as well as a variety of extinct groups, including the tree-like Calamitaceae.

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