Equisetum sylvaticum L. - Wood Horsetail


 

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Equisetum sylvaticum - (image 1 of 4)

 

Taxonomy

Family: Equisetaceae

Habitat

Cool, moist woods.

Associates

 

Distribution

Circumboreal. All of Canada, south into the northern U.S., as far south as VA and NC in the northeast.

Morphology

Perennial with annual stems; dimorphic. Stems hollow, sheaths toothed; sterile stems with whorled branches, the central cavity more than half the diameter of the stem; fertile stems smooth, succulent, green to brownish, with whorled branches.

Notes

Strobilli produced in May

Wetland indicator: Facultative Wetland

Endangered in several states.

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY

 

Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.

 

USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (http://plants.usda.gov).

National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

 


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 Michael Hough 2004