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Equisetum
Family: Equisetaceae
Equisetum image
Max Licher
  • Gleason & Cronquist
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Vascular plants of NE US and adjacent Canada
Rhizomatous colonial perennials with annual or perennial green stems, the epidermis with silicified cell walls and often with regularly arranged silicified projections, so that the surface is minutely rough to the touch. 2n=216 or nearly so. 15, cosmop. Sterile but vegetatively vigorous and persistent hybrids are often produced between species of the same subgenus. Some of these are: E. ئerrissii Clute = E. hyemale נlaevigatum; E. جitorale K
Species within inventory project: North American Species Lists
Equisetum arvense
Image of Equisetum arvense
Equisetum fluviatile
Image of Equisetum fluviatile
Equisetum hyemale
Image of Equisetum hyemale
Equisetum laevigatum
Image of Equisetum laevigatum
Equisetum nelsonii
Image of Equisetum nelsonii
Equisetum palustre
Image of Equisetum palustre
Equisetum scirpoides
Image of Equisetum scirpoides
Equisetum sylvaticum
Image of Equisetum sylvaticum
Equisetum variegatum
Image of Equisetum variegatum

The PCC, and this data portal, were made possible by funding from the National Science Foundation’s Advancing Digitization of Biological Collections (ADBC) program, grant numbers 1802504, 1802352, 1802134, 1802033, 1802270, 1802255, 1802239, 1802446, 1802305.
The pteridoportal taxonomic thesaurus is based on the Checklist of Ferns and Lycophytes of the World, generously provided by Michael Hassler.