|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: Berberidaceae||View Description||Dichotomous Key|
|Genus: Berberis||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Berberis aquifolium Pursh
Stem: spreading to erect, 0.1--2 m; bud scales generally deciduous. Leaf: cauline, not crowded, 8--24 cm; petiole generally 3--6 cm; leaflets 5--9, terminal 2--7.5 cm, 1.5--4.5 cm wide, +- round to elliptic, +- flat to strongly wavy, base +- lobed to wedge-shaped, tip acute to obtuse (except tooth), margin serrate, spines 6--24(40) per side, 1--5 mm. Inflorescence: 3--6 cm, dense; axis internodes 2--4 mm in flower, fruit. Fruit: 4--7 mm diam, ovoid to obovoid, glaucous, blue to purple. Seed: 4--5 mm.
Note: Varieties intergrade, need study; abaxial papillae on leaves evidently of no taxonomic value.
Unabridged Note: Presence or absence of abaxial papillae on leaves varies within, between populations and does not appear to provide a reliable taxonomic character.
eFlora Treatment Author: Michael P. Williams
Jepson Online Interchange
Previous taxon: Berberis
Next taxon: Berberis aquifolium var. aquifolium
Citation for this treatment: Michael P. Williams 2016. Berberis aquifolium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=15587, accessed on December 02, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 02, 2016.