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evergreen buckthorn, holly leaf redberry, redberry

evergreen buckthorn, Italian buckhorn, Italian buckthorn

Habit Shrubs or small trees, 1–4 m, unarmed. Shrubs, 0.5–6(–10) m, unarmed.
Branchlets

gray, stiff, glabrous or densely and softly hirtellous.

purplish brown, puberulent.

Leaves

persistent, alternate;

petiole 2–10 mm;

blade usually dull green, sometimes reddish brown, abaxially, glossy to dull green adaxially, broadly elliptic to oblong, orbiculate, or ovate, 2–4.5 cm, distinctly coriaceous, base cuneate to nearly truncate, margins spinulose to spinose-dentate, apex rounded or obtuse to truncate or emarginate, both surfaces glabrous;

secondary veins 5–7 pairs, all diverging at nearly same angle.

persistent, alternate;

petiole 4–10 mm;

blade dull to glossy yellowish green on both surfaces, elliptic to elliptic-obovate, ovate, or ovate-lanceolate, 2–4(–6) cm, distinctly coriaceous, base acute to obtuse, margins sharply serrate to spinulose-serrate, apex acute to subspinulose, both surfaces glabrous except abaxial vein axils tomentose;

secondary veins (3–)4–5 pairs, basal pair diverging much more acutely than distal pairs.

Inflorescences

fascicles or flowers solitary.

cymes or flowers solitary.

Pedicels

2–4 mm.

2–6 mm.

Drupes

red, globose, 4–6(–8) mm;

stones 2.

dark red, becoming black, globose, 5–7 mm;

stones 3.

Sepals

4.

5.

Petals

0.

0.

2n

= 24.

Rhamnus ilicifolia

Rhamnus alaternus

Phenology Flowering Jan–Jun. Flowering (Feb–)Mar–Jun.
Habitat Canyon slopes and bottoms, rock faces, open hillsides, sandstone ridges, serpentine slopes, roadsides, stream benches, riparian areas, meadows, coastal sage scrub, chaparral/desert transition, chaparral, woodlands, montane forests. Woodland edges, fencerows, low areas, stream banks, canyons, arroyos.
Elevation 100–2200(–2400) m. (300–7200(–7900) ft.) 0–400 m. (0–1300 ft.)
Distribution
from FNA
AZ; CA; NV; OR; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; Europe [Introduced in North America; introduced also in Pacific Islands (New Zealand), Australia]
[BONAP county map]
Source FNA vol. 12, p. 48. FNA vol. 12, p. 50.
Parent taxa Rhamnaceae > Rhamnus Rhamnaceae > Rhamnus
Sibling taxa
R. alaternus, R. alnifolia, R. arguta, R. cathartica, R. crocea, R. davurica, R. japonica, R. lanceolata, R. pilosa, R. pirifolia, R. serrata, R. smithii, R. utilis
R. alnifolia, R. arguta, R. cathartica, R. crocea, R. davurica, R. ilicifolia, R. japonica, R. lanceolata, R. pilosa, R. pirifolia, R. serrata, R. smithii, R. utilis
Synonyms R. crocea subsp. ilicifolia, R. crocea var. ilicifolia
Name authority Kellogg: Proc. Calif. Acad. Sci. 2: 37. (1863) — (as ilicifolius) Linnaeus: Sp. Pl. 1: 193. (1753)
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