Berberis pinnata subsp. insularis

Munz

Aliso 2: 230. 1950.

Conservation concernEndemic
Treatment appears in FNA Volume 3.

Shrubs, self-supporting or clambering, 1-7 m. Leaflets thin and flexible; lateral leaflet blades lance-oblong or elliptic, margins plane or weakly undulate, marginal teeth tipped with spines to 1-1.6 × 0.1-0.2 mm. Inflorescences 6-9 cm.


Phenology: Flowering winter (Mar).
Habitat: In shade beneath trees, pine and pine-oak forest
Elevation: 100-450 m

Discussion

Of conservation concern.

Berberis pinnata subsp. insularis is endemic to the Channel Islands. Specimens of B. pinnata from the coast north of Santa Barbara often show some characteristics of subsp. insularis.

Selected References

None.

Lower Taxa

None.

"thin" is not a number."thin" is not a number.

Alan T. Whittemore +
grayish brown +
cordate;truncate;cordate;truncate;obtuse +
Mahonia +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
2.6 cm26 mm <br />0.026 m <br /> (6.2 cm62 mm <br />0.062 m <br />) +
obovate +, oblanceolate +  and elliptic +
1.2 cm12 mm <br />0.012 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
2cm;4.5cm +
scale-like +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
100-450 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 +
In shade beneath trees, pine and pine-oak forest +
axillary +  and terminal +
6 cm60 mm <br />0.06 m <br /> (9 cm90 mm <br />0.09 m <br />) +
(3-)5-13-foliolate +
reduced +
undulate;plane +
1-carpellate +
basal +  and superior +
club--shaped +
3-merous +  and 2-merous +
nectariferous +
distinct +
4.5 cm45 mm <br />0.045 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Flowering winter (Mar). +
not nodose +
1 +  and 10 +
distinct +
elongate +
Conservation concern +  and Endemic +
1mm;1.6mm +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
elongating +
monomorphic +
with elongate primary-stems and short axillary spur shoots +  and elongate +
palmate +  and pinnate +
persistent +
Mahonia pinnata +
Berberis pinnata subsp. insularis +
Berberis pinnata +
subspecies +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
shrub +  and self-supporting +
glabrous +  and with tomentose stems +