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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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BERBERIDACEAE

BARBERRY FAMILY

Michael P. Williams

Perennial, shrub, generally from rhizomes; caudex sometimes present, glabrous, glaucous, or hairy
Stems spreading to erect, branched or not
Leaves simple, 1–3-ternate, or pinnately compound, basal and cauline, generally alternate, deciduous or evergreen, petioled
Inflorescence: generally raceme, spike, or panicle, scapose, terminal, or axillary
Flower: sepals 6–18 or 0, generally in whorls of 3; petals generally 6, in 2 whorls of 3, or 0; stamens 6–12, free or fused at base, 2-whorled 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, or achene
Genera in family: 16 genera, ± 670 species: temp, tropical worldwide; some cultivated (Berberis, Epimedium, Nandina (Heavenly bamboo), Vancouveria )
Reference: [Ernst 1964 J Arnold Arbor 45:1–35]

BERBERIS

OREGON-GRAPE, BARBERRY

Shrub, generally from rhizomes
Stems spreading to erect, branching, spiny or not, sometimes vine-like; inner bark, wood generally bright yellow; bud bracts deciduous or persistent
Leaves simple or pinnately compound, cauline, alternate, deciduous or evergreen; 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, base generally glandular; stamens 6, anther valves pointed down to ± spreading; ovules 2–9, stigma ± spheric
Fruit: berry, spheric to elliptic, generally purple-black
Species in genus: ± 600 species: temp worldwide
Etymology: (Latin: ancient Arabic name for barberry)
[see Moran 1982 Phytologia 52:221–226 for relationship between Berberis and Mahonia ] Roots often TOXIC; spines may inject fungal spores into skin.

Native

B. pinnata Lag.


Stems erect, reclining on tree branches, or vine-like, 0.4–8 m; bud bracts generally deciduous
Leaves cauline, not crowded, 9–20 cm; petiole 1–3 cm; leaflets generally 7–11, 3–7 cm, 2–4.5 cm wide, ovate to widely elliptic, wavy, base slightly lobed to truncate, tip acute to obtuse except tooth, dentate to serrate, sometimes entire, spine-tipped teeth 15–23, 1–2 mm
Inflorescence 3–4 cm, dense; axis internodes 2–4 mm in flower
Fruit 6–8 mm diam, ovoid to obovoid, glaucous, blue-purple
Seeds 3–4 mm
Ecology: Rocky slopes, coniferous forest, oak woodland
Elevation: < 1200 m.
Bioregional distribution: Northwestern California, Central Western California, n Channel Islands, Western Transverse Ranges, San Gabriel Mountains, Peninsular Ranges
Distribution outside California: to British Columbia, Baja California
Relationship to B. aquifolium needs study.

Native

subsp. insularis Munz

ISLAND BARBERRY


Stems reclining or vine-like, 2–8 m
Leaf: leaflets dentate, serrate, or subentire
Inflorescence 3–7.5 cm
Ecology: Closed-cone-pine forest
Elevation: < 400 m.
Bioregional distribution: n Channel Islands
Synonyms: Mahonia p. (Lag.) Fedde subsp. i. (Munz) Roof
Horticultural information: In cultivation.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for BERBERIS%20pinnata%20subsp.%20insularis being generated
 
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Berberis pinnata subsp. insularis
Retrieve dichotomous key for Berberis
Overlay Consortium of California Herbaria specimen data by county on this map
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