Berberis fremontii

Torrey in W. H. Emory

in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 30. 1859.

EndemicIllustrated
Synonyms: Mahonia fremontii (Torrey) Fedde
Treatment appears in FNA Volume 3.

Shrubs evergreen, 1-4.5 m. Stems ± dimorphic, with elongate primary and short or somewhat elongate axillary shoots. Bark of 2d-year stems light-brown or grayish purple, glabrous. Bud-scales 2-4 mm, deciduous. Spines absent. Leaves 5-9 (-11) -foliolate; petioles 0.2-0.8 (-3) cm. Leaflet blades thick and rigid; surfaces abaxially dull, papillose, adaxially dull, glaucous; terminal leaflet stalked in most or all leaves, blade 1-2.6 (-4) × 0.7-1.8 (-2.5) cm, 1-2.5 times as long as wide; lateral leaflet blades elliptic to ovate or orbiculate, 1-3-veined from base, base obtuse or truncate, margins strongly crispate, toothed or lobed, with 2-5 teeth 2-6 mm high tipped with spines to 0.8-2.2 × 0.2-0.3 mm, apex obtuse to acuminate. Inflorescences racemose, lax, 3-6-flowered, 2.5-6.5 cm; bracteoles membranous, apex acuminate. Flowers: anther-filaments with distal pair of recurved lateral teeth. Berries yellow or red to brown, ± glaucous, spheric, 12-18 mm, dry, inflated.


Phenology: Flowering spring (Apr–Jun).
Habitat: Slopes and flats in desert grassland and pinyon-juniper woodland
Elevation: 1100-2400(-3400) m

Distribution

V3 451-distribution-map.gif

Ariz., Calif., Colo., Nev., N.Mex., Utah.

Discussion

Berberis fremontii is susceptible to infection by Puccinia graminis.

The Apache Indians used Berberis fremontii for ceremonial purposes; the Hopi used it medicinally to heal gums (D. E. Moermann 1986).

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

... more about "Berberis fremontii"
Alan T. Whittemore +
Torrey in W. H. Emory +
grayish purple +  and light-brown +
truncate;obtuse +
Mahonia +
red +  and brown +
1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
2.6 cm26 mm <br />0.026 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
obovate +, oblanceolate +  and elliptic +
1.2 cm12 mm <br />0.012 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
0.7cm;1.8cm +
scale-like +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ariz. +, Calif. +, Colo. +, Nev. +, N.Mex. +  and Utah. +
1100-2400(-3400) m +
small +  and large +
showy +  and inconspicuous +
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 0.8 cm8 mm <br />0.008 m <br /> (?) +
compound +  and simple +
spheric +  and cylindric-ovoid or ellipsoid +
Slopes and flats in desert grassland and pinyon-juniper woodland +
axillary +  and terminal +
2.5 cm25 mm <br />0.025 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
5-9(-11)-foliolate +
reduced +
lobed;toothed;crispate +
1-carpellate +
basal +  and superior +
club--shaped +
3-merous +  and 2-merous +
nectariferous +
distinct +
0.8 cm8 mm <br />0.008 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering spring (Apr–Jun). +
in W. H. Emory, Rep. U.S. Mex. Bound. +
not nodose +
1 +  and 10 +
distinct +
elongate +
Endemic +  and Illustrated +
0.8mm;2.2mm +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
elongating +
monomorphic +, unbranched +  and branched +
with elongate primary-stems and short axillary spur shoots +  and elongate +
palmate +  and pinnate +
persistent +
papillose +
Mahonia fremontii +
Berberis fremontii +
Berberis +
species +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
glabrous +  and with tomentose stems +