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Wilcox's barberry, Wilcox's hollygrape

Habit Shrubs, evergreen, 0.3-2 m. Stems ± monomorphic, seldom with short axillary shoots. Shrubs, evergreen, 0.2-1.2 m. Stems monomorphic, without short axillary shoots.
Bark

of 2d-year stems purple or brown, glabrous.

of 2d-year stems purple, glabrous.

Leaves

5-9-foliolate;

petioles 1-5 cm.

5-7-foliolate;

petioles 1.5-5 cm.

Leaflet

blades thick and rigid;

surfaces abaxially dull, papillose, adaxially glossy, green;

terminal leaflet stalked, blade 2.6-6.6 × 1.7-4.4 cm, 1-2.5 times as long as wide;

lateral leaflet blades oblong to ovate or elliptic, 1-3-veined from base, base obtuse to rounded or truncate, margins plane to crispate, toothed, each with 3-5 teeth 1-5 mm tipped with spines to 1.2-3.8 × 0.2-0.6 mm, apex acute to rounded.

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.

Spines

absent.

absent.

Inflorescences

racemose, dense, 30-50-flowered, 2-7 cm;

bracteoles membranous, apex rounded or obtuse.

racemose, dense, 25-35-flowered, 3-6 cm;

bracteoles membranous, apex obtuse or rounded.

Flowers

anther filaments with distal pair of recurved lateral teeth.

anther filaments distally with pair of recurved teeth: author had no data available.

Berries

blue, glaucous, oblong-ovoid, 6-11 mm, juicy, solid.

dark blue, glaucous, ovoid to elliptic, 7-9 mm, juicy, solid.

Bud

scales 2-6 mm, deciduous.

scales 3-6 mm, deciduous.

2n

= 28.

Berberis wilcoxii

Berberis amplectens

Phenology Flowering spring (Apr–May). Flowering spring (Apr–May).
Habitat Slopes and canyons Rocky slopes in chaparral and open forest
Elevation 1500-2500 m (4900-8200 ft) 900-1900 m (3000-6200 ft)
Distribution
from FNA
AZ; NM; Mexico (Sonora)
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
Discussion

Berberis wilcoxii has not been tested for resistance to infection by Puccinia graminis.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

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

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 3. FNA vol. 3.
Parent taxa Berberidaceae > Berberis Berberidaceae > Berberis
Sibling taxa
B. amplectens, B. aquifolium, B. bealei, B. canadensis, B. darwinii, B. dictyota, B. fendleri, B. fremontii, B. haematocarpa, B. harrisoniana, B. higginsiae, B. nervosa, B. nevinii, B. pinnata, B. piperiana, B. pumila, B. repens, B. swaseyi, B. thunbergii, B. trifoliolata, B. vulgaris
B. aquifolium, B. bealei, B. canadensis, B. darwinii, B. dictyota, B. fendleri, B. fremontii, B. haematocarpa, B. harrisoniana, B. higginsiae, B. nervosa, B. nevinii, B. pinnata, B. piperiana, B. pumila, B. repens, B. swaseyi, B. thunbergii, B. trifoliolata, B. vulgaris, B. wilcoxii
Synonyms Mahonia amplectens
Name authority Kearney: Trans. New York Acad. Sci. 14: 29. (1894) (Eastwood) L. C. Wheeler: Rhodora 39: 376. (1937)
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