Berberis amplectens

(Eastwood) L. C. Wheeler

Rhodora 39: 376. 1937.

Conservation concernEndemic
Basionym: Mahonia amplectens Eastwood Proc. Calif. Acad. Sci., ser. 4, 20: 145. 1931
Treatment appears in FNA Volume 3.

Shrubs, evergreen, 0.2-1.2 m. Stems monomorphic, without short axillary shoots. Bark of 2d-year stems purple, glabrous. Bud-scales 3-6 mm, deciduous. Spines absent. Leaves 5-7-foliolate; petioles 1.5-5 cm. Leaflet blades thick and rigid; surfaces abaxially dull, papillose, adaxially dull, ± glaucous; terminal leaflet stalked, blade 4.4-5.5 × 3.1-4.6 cm, 1.1-1.4 times as long as wide; lateral leaflet blades oblong or circular, 1-5-veined from base, base truncate or cordate, margins undulate or crispate, toothed, each with 9-15 teeth 1-3 mm tipped with spines to 1.4-2.4 × 0.2-0.4 mm, apex truncate or broadly rounded. Inflorescences racemose, dense, 25-35-flowered, 3-6 cm; bracteoles membranous, apex obtuse or rounded. Flowers: anther-filaments distally with pair of recurved teeth: author had no data available. Berries dark blue, glaucous, ovoid to elliptic, 7-9 mm, juicy, solid. 2n = 28.


Phenology: Flowering spring (Apr–May).
Habitat: Rocky slopes in chaparral and open forest
Elevation: 900-1900 m

Discussion

Of conservation concern.

Berberis amplectens is endemic to the Peninsular Ranges of southern California. It is resistant to infection by Puccinia graminis.

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

... more about "Berberis amplectens"
Alan T. Whittemore +
(Eastwood) L. C. Wheeler +
cordate;truncate +
Mahonia amplectens +
Ovoid (?) +  and Elliptic (?) +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
4.4 cm44 mm <br />0.044 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
obovate +, oblanceolate +  and elliptic +
1.2 cm12 mm <br />0.012 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
3.1cm;4.6cm +
scale-like +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
900-1900 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 +
Rocky slopes in chaparral and open forest +
axillary +  and terminal +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
5-7-foliolate +
reduced +
toothed;crispate;undulate +
1-carpellate +
basal +  and superior +
club--shaped +
3-merous +  and 2-merous +
nectariferous +
distinct +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering spring (Apr–May). +
not nodose +
1 +  and 10 +
distinct +
elongate +
Conservation concern +  and Endemic +
1.4mm;2.4mm +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
elongating +
monomorphic +
with elongate primary-stems and short axillary spur shoots +  and elongate +
palmate +  and pinnate +
persistent +
papillose +
Odostemon +
Berberis amplectens +
Berberis +
species +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
glabrous +  and with tomentose stems +