|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Equisetaceae||View Description||Dichotomous Key|
|Genus: Equisetum||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Equisetum ×ferrissii Clute
Stem: annual to perennial herb, of 1 kind, 20--180 cm, green; sheath 7--17 mm, 3--12 mm wide, often with dark bands; teeth 14--32, deciduous or persistent; branches 0. Sporangia: cone tip pointed; spores white, misshapen.
Ecology: Moist, sandy or gravelly areas; Elevation: < 3000 m. Bioregional Distribution: NCo, KR, NCoRO, CaRF, SNH, GV, CW (exc SCoRI), SCo, SnGb, PR (exc SnJt), DMtns; Distribution Outside California: to British Columbia, eastern United States. Note: Hybrids between Equisetum hyemale, Equisetum laevigatum, reproducing vegetatively from fragmented stems, sometimes forming large populations, sometimes at great distance from parents.
eFlora Treatment Author: Robert E. Preston & Richard L. Hauke
Jepson Online Interchange
Previous taxon: Equisetum arvense
Next taxon: Equisetum hyemale subsp. affine
Citation for this treatment: Robert E. Preston & Richard L. Hauke 2017. Equisetum ×ferrissii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=24419, accessed on February 23, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 23, 2017.