Jepson Herbarium
		University of California, Berkeley

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Indexes to all 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 |

Perennial from rhizome.
Stem: annual to perennial herb, generally erect, of 2 kinds ( sterile, fertile) or not; internodes with lengthwise alternating ridges and grooves, hollow except at nodes, branches 0 or whorled, alternate leaves.
Leaf: scale-like, whorled, fused into nodal sheath with as many teeth as leaves, generally not green.
Sporangia: several on inner surface of peltate scales that are clustered into a terminal cone; spores of 1 kind, spheric, green, unmarked, with 4 strap-like appendages.
1 genus, 15 species: worldwide except Australia, New Zealand. [Hauke 1993 FNANM 2:76–84] —Scientific Editors: Alan R. Smith, Thomas J. Rosatti.

(Latin: horse, bristle, from roots of Equisetum fluviatile L.)

Stem: perennial herb, of 1 kind, 60–210 cm, green, scabrous; sheath 7–17 mm, ± as long as wide, generally with 2 dark bands, 1 at base, 1 at tip, teeth 22–50, generally deciduous; branches 0.
Sporangia: cone tip pointed; spores green, spheric.
Streams, moist, sandy, gravelly areas; < 2500 m. North Coast, Klamath Ranges, Outer North Coast Ranges, High Cascade Range, n&c Sierra Nevada, s High Sierra Nevada, Great Central Valley, Central Western California (except Inner South Coast Ranges), Southwestern California (except s Channel Islands), Warner Mountains, East of Sierra Nevada, Desert;

Previous taxon: Equisetum × ferrissii
Next taxon: Equisetum laevigatum

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].

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Bioregions in which taxon occurs	Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates.	Data provided by the participants of the Consortium of California Herbaria. View all CCH records   CCH collections by month Duplicates counted once; synonyms included. Species do not include records of infraspecific taxa. Blue line denotes Manual flowering time.