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Equisetum telmateia subsp. braunii
GIANT 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 telmateia Ehrh. subsp. braunii (J. Milde) Hauke
NATIVE
Stem: annual, of 2 kinds. Sterile Stem: 30--100 cm, light green; basal internode of branch < subtending sheath; sheath 7--18 mm, +- as long as wide, teeth 14--28, 4--10 mm; branches with 4--5 grooved ridges, solid. Fertile Stem: 17--45 cm, fleshy, brown, ephemeral; sheath 1.5--4 cm, > that of sterile stem, teeth 20--30, 5--16 mm; branches 0.
Ecology: Streambanks, roadside ditches, seepage areas; Elevation: < 1000 m. Bioregional Distribution: NW (exc NCoRH), CaRH, n SNF, n&c SNH, CW (exc SCoRI), SW (exc SnJt); Distribution Outside California: along coast to British Columbia. Note: 1 other subsp., in Europe, Asia. Records from higher elevations are likely Equisetum arvense.
eFlora Treatment Author: Robert E. Preston & Richard L. Hauke
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botanical illustration including Equisetum telmateia subsp. braunii

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Citation for this treatment: Robert E. Preston & Richard L. Hauke 2016. Equisetum telmateia subsp. braunii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=50317, 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.


Equisetum telmateia subsp. braunii
click for enlargement
© 2008 Neal Kramer
Equisetum telmateia subsp. braunii
click for enlargement
© 2007 Neal Kramer
Equisetum telmateia subsp. braunii
click for enlargement
© 2008 Neal Kramer
Equisetum telmateia subsp. braunii
click for enlargement
© 2011 Neal Kramer
Equisetum telmateia subsp. braunii
click for enlargement
© 2008 Neal Kramer
Equisetum telmateia subsp. braunii
click for enlargement
© 2008 Neal Kramer

More photos of Equisetum telmateia subsp. braunii in CalPhotos


Geographic subdivisions for Equisetum telmateia subsp. braunii:
NW (exc NCoRH), CaRH, n SNF, n&c SNH, CW (exc SCoRI), SW (exc SnJt);
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.
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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).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.