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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 December 05, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 05, 2016.


Equisetum telmateia subsp. braunii
click for enlargement
© 2008 Neal Kramer
Equisetum telmateia subsp. braunii
click for enlargement
© 2013 Julie Kierstead Nelson
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
© 2007 Neal Kramer
Equisetum telmateia subsp. braunii
click for enlargement
© 2016 Steve Matson

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. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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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.