|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Equisetaceae||View Description||Dichotomous Key|
|Genus: Equisetum||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Equisetum arvense L.
Stem: annual, of 2 kinds. Sterile Stem: 10--60 cm, green; basal internode of branch > subtending sheath; sheath 3--8.5 mm, +- as long as wide, teeth 6--14, 1.5--3.5 mm, dark, often joined but not fused; branch with 3--4 rounded ridges, solid. Fertile Stem: 11--32 cm, unbranched, fleshy, brown, ephemeral; sheath 5--11 mm, > that of sterile stem, teeth 6--10, 3--7.5 mm.
Ecology: Streambanks, wet meadows, springs, other wet, shaded places; Elevation: < 3050 m. Bioregional Distribution: NW (exc NCoRH), CaR, SN (exc Teh), GV, CCo, SnFrB, SCoRO, SW (exc ChI), MP, SNE, DMoj (exc DMtns); Distribution Outside California: North America, Europe, Asia.
eFlora Treatment Author: Robert E. Preston & Richard L. Hauke
Jepson Online Interchange
Previous taxon: Equisetum
Next taxon: Equisetum ×ferrissii
Citation for this treatment: Robert E. Preston & Richard L. Hauke 2016. Equisetum arvense, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=24416, accessed on August 30, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on August 30, 2016.