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Equisetum fluviatile, the water horsetail or swamp horsetail, is a vascular plant in the horsetail family Equisetaceae. It is a perennial herbaceous pteridophyte that ...
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.
In the only extant genus Equisetum, these are small leaves (microphylls) with a singular vascular trace, fused into a sheath at each stem node. However, the leaves of Equisetum probably arose by the reduction of megaphylls , as evidenced by early fossil forms such as Sphenophyllum , in which the leaves are broad with branching veins.
Equisetaceae, also known as the horsetail family, [1] is a family of ferns and the only surviving family of the order Equisetales, with one surviving genus, Equisetum, comprising about twenty species.
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Semiaquatic angiosperms (e.g., mangroves, reeds, water spinach and the entire order Nymphaeales) Semiaquatic conifers, such as pond cypress; Semiaquatic ferns, such as Pilularia americana; A semiaquatic horsetail, Equisetum fluviatile; Semiaquatic quillworts, such as Isoetes melanospora; Semiaquatic club mosses, such as Lycopodiella inundata
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The genus Equisetum - of 'horsetail' fern species. Pages in category "Equisetum" ... Equisetum fluviatile; G. Equisetum giganteum; H.
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