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University of California, Berkeley | |||||
Jepson Herbarium | |||||
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Jepson eFlora: Taxon page
Key to families | Table of families and genera |
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Index to accepted names and synonyms: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | |
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Family: Equisetaceae | View Description | Dichotomous Key |
Genus: Equisetum | View Description | Dichotomous Key |
Species: | View Description | Dichotomous Key |
Higher Taxonomy
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Equisetum arvense L. NATIVE 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 2012, Equisetum arvense, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=24416, accessed on April 20, 2018. Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on April 20, 2018. More photos of Equisetum arvense in CalPhotos
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