Berberis harrisoniana

Kearney & Peebles

J. Wash. Acad. Sci. 29: 477. 1939.

Conservation concernEndemic
Treatment appears in FNA Volume 3.

Shrubs, evergreen, 0.5-1.5 m. Stems often ± dimorphic, with elongate primary and somewhat elongate axillary shoots. Bark of 2d-year stems brown or gray, glabrous. Bud-scales 1.5-3 mm, deciduous. Spines absent. Leaves 3-foliolate; petioles 1.5-5 cm. Leaflet blades thick and rigid; surfaces abaxially ± dull, papillose, adaxially dull, rarely glossy, somewhat glaucous; terminal leaflet sessile, blade 2.9-5.4 × 2.2-3.2 cm, 1.3-2.4 times as long as wide; lateral leaflet blades ovate or rhombic to lanceolate, 1-3-veined from base, base acute to rounded-obtuse, margins plane or undulate, lobed, with 1-2 teeth 5-13 mm high tipped with spines to 2-3.4 × 0.3-0.4 mm, apex acuminate. Inflorescences racemose, rather dense, 6-11-flowered, 1.5-2.5 cm; bracteoles membranous, apex acute or obtuse. Flowers: anther-filaments with distal pair of recurved lateral teeth. Berries blue-black, glaucous, spheric to short-ovoid, 5-6 mm, juicy, solid.


Phenology: Flowering winter (Jan–Mar).
Habitat: Shady spots in rocky canyons
Elevation: 800-1100 m

Discussion

Of conservation concern.

Berberis harrisoniana is endemic to the Kofa and Ajo mountains. It has not been tested for resistance to infection by Puccinia graminis.

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

... more about "Berberis harrisoniana"
Alan T. Whittemore +
Kearney & Peebles +
gray +  and brown +
acute;rounded-obtuse +
Mahonia +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2.9 cm29 mm <br />0.029 m <br /> (5.4 cm54 mm <br />0.054 m <br />) +
obovate +, oblanceolate +  and elliptic +
1.2 cm12 mm <br />0.012 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
2.2cm;3.2cm +
scale-like +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
800-1100 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 +
Shady spots in rocky canyons +
axillary +  and terminal +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
3-foliolate +
reduced +
lobed;undulate;plane +
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 winter (Jan–Mar). +
J. Wash. Acad. Sci. +
not nodose +
1 +  and 10 +
distinct +
elongate +
Conservation concern +  and Endemic +
2mm;3.4mm +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
elongating +
monomorphic +, unbranched +  and branched +
with elongate primary-stems and short axillary spur shoots +  and elongate +
palmate +  and pinnate +
persistent +
glossy +  and dull +
papillose +
Odostemon +
Berberis harrisoniana +
Berberis +
species +
0.5 cm5 mm <br />0.005 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
glabrous +  and with tomentose stems +