Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon 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 |
Next taxon
Equisetum palustre
MARSH HORSETAIL

Higher Taxonomy
Family: EquisetaceaeView Description 

Common Name: HORSETAIL FAMILY
Habit: Perennial herb 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.
Genera In Family: 1 genus, 15 species: worldwide except Australia, New Zealand.
eFlora Treatment Author: Robert E. Preston & Richard L. Hauke
Scientific Editor: Alan R. Smith, Thomas J. Rosatti.
Genus: EquisetumView DescriptionDichotomous Key

Common Name: HORSETAIL, SCOURING RUSH

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

Equisetum palustre L.
NATIVE
Stem: annual, of 1 kind, 20--80 cm, green; basal internode of branch < subtending sheath; sheath 4--9 mm, longer than wide, teeth 5--10, 2--5 mm, free; branches with 4--6 rounded ridges, hollow.
Ecology: Marshes; Elevation: < 300 m. Bioregional Distribution: NCoRI, CCo (San Francisco); Distribution Outside California: Oregon to Alaska, eastern North America. Note: Presence in California questionable; hybrids with Equisetum telmateia subsp. braunii reported questionably for California, from San Mateo, Marin cos.
eFlora Treatment Author: Robert E. Preston & Richard L. Hauke
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Equisetum laevigatum
Next taxon: Equisetum telmateia subsp. braunii

Name Search
botanical illustration including Equisetum palustre

Contact/Feedback

Citation for this treatment: Robert E. Preston & Richard L. Hauke 2016. Equisetum palustre, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=24434, accessed on May 04, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 04, 2016.


Geographic subdivisions for Equisetum palustre:
NCoRI, CCo (San Francisco);
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.
READ ABOUT YELLOW FLAGS
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

View elevation by latitude chart
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 eFlora flowering time.