Equisetum hyemale L. var. affine (Engelm.) A.A. Eaton

Scouring Rush

Synonyms	Equisetum affine Engelm. Equisetum hyemale L. var. pseudohyemale (Farw.) C.V. Morton Equisetum hyemale L. var. robustum (A. Braun) A.A. Eaton Equisetum prealtum Raf. Equisetum robustum A. Braun Hippochaete hyemalis (L.) Bruhin Hippochaete hyemalis (L.) Bruhin ssp. affinis (Engelm.) W.A. Weber
Lower taxa	none
Origin	native
Growth habit	forb/herb
Habitat	moist, shaded soil of sandy riversides, slopes
Range	through northern New Jersey and along the Delaware River southward; rare in Cape May and Atlantic Counties
Frequency	frequent
Rank	G5 N5? SNR
Status	none
Wetland status	US: FAC+, FACW; Northeastern Region: FACW
Reproductive parts present	sporophylls late April to September, some later
Comments	Evergreen; forms dense colonies. Var. affine is the only variety of Equisetum hyemale in the United States.

Herbarium records: Academy of Natural Sciences (PH), Brooklyn Botanic Garden (BKL), Chrysler Herbarium at Rutgers University (CHRB), New York Botanical Garden (NY), Staten Island Museum (SIM).
Hough, M.Y. 1983. New Jersey wild plants. Harmony Press, Harmony, N.J.
Montgomery, J.D., and D.E. Fairbrothers. 1985. New Jersey ferns and fern-allies. Rutgers University Press, New Brunswick, N.J.
NatureServe. 2006. NatureServe explorer: an online encyclopedia of life. Version 4.7. 10 March 2006. <http://www.natureserve.org/explorer>.
U.S. Department of Agriculture and Natural Resources Conservation Service. 2006. The PLANTS database. 29 August 2006. <http://plants.usda.gov>.

Species page by Gerry Moore and Janet Novak. © 2006 by the Flora of New Jersey Project. Last updated February 24, 2008.
Hosted by Rutgers, the State University of New Jersey in collaboration with the Chrysler Herbarium.

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