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Berberis nervosa

Higher Taxonomy
Family: BerberidaceaeView DescriptionDichotomous Key

Common Name: BARBERRY FAMILY
Habit: Perennial herb, shrub, [tree], generally rhizomed, caudexed or not, glabrous, glaucous, or hairy. Stem: spreading to erect, branched or not. Leaf: simple, 1--3-ternate, or pinnately compound, basal and cauline, generally alternate, deciduous or evergreen, petioled, stipuled. Inflorescence: generally raceme, spike, or panicle, scapose, terminal, or axillary. Flower: generally bisexual, radial; sepals 6--18 or 0, generally in whorls of 3; petals generally 6, in 2 whorls of 3, or 0; stamens 6--12(13), free or fused at base, in 2 whorls or not, anthers dehiscent by flap-like valves or longitudinal slits; ovary superior, chamber 1, ovules generally 1--10, style 1 or 0, stigma flat or spheric. Fruit: berry, capsule, achene [follicle].
Genera In Family: 16 genera, +- 670 species: temperate, tropics worldwide; some cultivated (Berberis, Epimedium, Nandina (heavenly bamboo), Vancouveria). Note: Lower sepals sometimes called "bracteoles," inner petals "staminodes".
eFlora Treatment Author: Michael P. Williams
Scientific Editor: Thomas J. Rosatti.
Genus: BerberisView DescriptionDichotomous Key

Common Name: OREGON-GRAPE, BARBERRY
Habit: Shrub, generally rhizomed. Stem: spreading to erect, branched, spiny or not, vine-like or not; inner bark, wood generally bright yellow; over-wintering bud scales deciduous or not. Leaf: simple or pinnately compound, cauline, alternate, generally leathery, generally persistent; leaflets generally 3--11, +- round to lanceolate, generally spine-toothed. Inflorescence: raceme, axillary or terminal. Flower: sepals 9 in 3 whorls of 3; petals 6 in 2 whorls of 3, bases generally glandular; stamens 6; ovules 2--9, stigma +- spheric. Fruit: berry, spheric to elliptic, generally purple-black.
Species In Genus: +- 600 species: temperate worldwide. Etymology: (Latin: ancient Arabic name for barberry) Toxicity: Roots often TOXIC: spines may inject fungal spores into skin. Note: Contact with filament causes stamen to snap inward, possibly to deposit pollen on pollinator.

Berberis nervosa Pursh
NATIVE
Stem: generally spreading to erect, 0.1--0.6(2) m; bud scales 15--45 mm, lanceolate, thick, persistent among upper leaves. Leaf: +- crowded distally, 12--45 cm; petiole generally 2--7 cm; leaflets 7--23, terminal 2.5--8 cm, 1.5--3 cm wide, lanceolate to ovate, flat, base +- oblique to rounded, tip acute, margin serrate, spines 10--24 per side, 1--2 mm. Inflorescence: 4--15 cm, +- open; axis internodes 2--8 mm, 4--10 mm in fruit; flowers > 20. Fruit: 8--12 mm diam, ovoid to obovoid, subglaucous, blue-purple. Seed: 4--6 mm. Chromosomes: 2n=56.
Ecology: Conifer forest; Elevation: < 2000 m. Bioregional Distribution: NW, n SNH (Sierra Co.), SnFrB, n SCoR; Distribution Outside California: to British Columbia, Idaho. Flowering Time: Mar--Jun
Synonyms: Mahonia nervosa (Pursh) Nutt. var. mendocinensis (Roof) Roof
eFlora Treatment Author: Michael P. Williams
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Previous taxon: Berberis higginsiae
Next taxon: Berberis nevinii

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Citation for this treatment: Michael P. Williams 2016. Berberis nervosa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=15594, accessed on May 01, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 01, 2016.


Berberis nervosa
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© 2014 Dana York
Berberis nervosa
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© 2014 Barry Rice
Berberis nervosa
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© 2011 Steve Matson
Berberis nervosa
click for enlargement
© 2014 Barry Rice
Berberis nervosa
click for enlargement
© 2011 Steve Matson
Berberis nervosa
click for enlargement
© 2011 Steve Matson

More photos of Berberis nervosa in CalPhotos


Geographic subdivisions for Berberis nervosa:
NW, n SNH (Sierra Co.), SnFrB, n SCoR;
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.