Taxon: Equisetum hyemale L. subsp. affine (Engelm.) Calder & Roy L. Taylor

• Check PlantSearch database of Botanic Gardens Conservation International for possible non-NPGS germplasm.

See other conspecific taxa:

• Equisetum hyemale (no accessions)
• Equisetum hyemale subsp. hyemale (no accessions)

Economic importance:

• Environmental: ornamental   (fide F CalifJep)
  

More:

View ethnobotanical data from Moerman's Native American Ethnobotany Database

Distributional range:

• NORTHERN AMERICA (Check conservation status in U.S. & Canada in NatureServe Explorer database)
  Subarctic America: Canada - Northwest Territory [w.], Yukon Territory; United States - Alaska
  Eastern Canada: Canada - New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Island, Quebec
  Western Canada: Canada - Alberta, British Columbia, Manitoba [s.], Saskatchewan
  Northeastern U.S.A.: United States - Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia
  North-Central U.S.A.: United States - Illinois, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, Oklahoma, South Dakota, Wisconsin
  Northwestern U.S.A.: United States - Colorado, Idaho, Montana, Oregon, Washington, Wyoming
  Southeastern U.S.A.: United States - Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia
  South-Central U.S.A.: United States - New Mexico, Texas
  Southwestern U.S.A.: United States - Arizona, California, Nevada, Utah
  Mexico
• SOUTHERN AMERICA
  Mesoamerica: El Salvador; Guatemala

• also cultivated

References:

• Cronquist, A. et al. 1972–. Intermountain flora. [mentions].
• Davidse, G. et al., eds. 1994. Flora mesoamericana.
• FNA Editorial Committee. 1993–. Flora of North America. 2:83.
• Hickman, J. C., ed. 1993. The Jepson manual: higher plants of California.
• Mickel, J. T. & A. R. Smith. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88:1-1054.

Check other web resources for Equisetum hyemale L. subsp. affine (Engelm.) Calder & Roy L. Taylor:

• Flora of North America: Collaborative Floristic Effort of North American Botanists
• PLANTS: USDA-NRCS Database of Plants of the United States and its Territories
• TROPICOS: Nomenclatural and Specimen Database of the Missouri Botanical Garden

Check other databases for images:

• Images Note: Be advised that their identity may be inaccurate. Proper identification of a plant may require specialized taxonomic knowledge or comparison with properly documented herbarium material.

Abbreviations & symbols in GRIN Taxonomy

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