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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.
The genus Equisetum - of 'horsetail' fern species. Pages in category "Equisetum" The following 24 pages are in this category, out of 24 total.
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 ...
Equisetum arvense grows in a wide range of conditions, in temperatures less than 5 °C (41 °F) to greater than 20 °C (68 °F) and in areas that receive annual rainfall as low as 100 mm (3.9 in) and as great as 2,000 mm (79 in). It commonly occurs in damp and open woodlands, pastures, arable lands, roadsides, disturbed areas, and near the edge ...
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 .
All extant species of Equisetum are herbaceous, and have lost the ability to produce secondary growth. [5] The underground parts of the plants consist of jointed rhizomes, from which roots and aerial axes emerge. The plants have intercalary meristems in each segment of the stem and rhizome that grow as the plant gets taller. This contrasts with ...
Equisetum variegatum, commonly known as variegated horsetail [1] or variegated scouring rush, is a species of vascular plant in the horsetail family Equisetaceae. It is native to the northern hemisphere where it has a circumpolar distribution.
Equisetum schaffneri Milde Equisetum xylochaetum Mett. Equisetum giganteum , with the common name southern giant horsetail , is a species of horsetail native to South America and Central America , from central Chile east to Brazil and north to southern Mexico.