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|Jepson eFlora: Taxon page
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|Family: Berberidaceae||View Description||Dichotomous Key|
|Genus: Berberis||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Berberis fremontii Torr.
Stem: erect, 0.1--4(5) m; bud scales < 5 mm, generally deciduous. Leaf: 3--6 cm, crowded on short lateral stems; petiole < 1 cm; leaflets 3--7(9), terminal 1.5--2.5 cm, 1--1.5 cm wide, generally lance-ovate, wavy, generally folded along midrib, base truncate to wedge-shaped, tip generally acute, margin +- lobed, spines 3--8 per side, 2--3 mm. Inflorescence: 4--5.5 cm, open; axis internodes 2--10 mm, 5--10 mm in fruit; flowers 8--12. Fruit: 6--15 mm diam, +- spheric, glaucous, yellow- to purple-red. Seed: 3--4 mm.
Ecology: Rocky slopes, pinyon/juniper woodland, chaparral; Elevation: 900--1850 m. Bioregional Distribution: PR, e&s DMoj; Distribution Outside California: to Colorado, New Mexico, Mexico. Flowering Time: Mar--May Note: Intergrades with Berberis haematocarpa, especially in eastern DMoj; overlaps morphologically with Berberis higginsiae in PR, Baja California. Larval exit holes suggest fruit inflation may be due to parasitism by insects.
Synonyms: Mahonia fremontii (Torr.) Fedde
eFlora Treatment Author: Michael P. Williams
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Berberis darwinii
Next taxon: Berberis haematocarpa
Citation for this treatment: Michael P. Williams 2016. Berberis fremontii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=15591, accessed on May 25, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 25, 2016.