Rhamnus ilicifolia |
Rhamnus alaternus |
|
---|---|---|
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 |
AZ; CA; NV; OR; Mexico (Baja California)
|
CA; Europe [Introduced in North America; introduced also in Pacific Islands (New Zealand), Australia] |
Source | FNA vol. 12, p. 48. | FNA vol. 12, p. 50. |
Parent taxa | Rhamnaceae > Rhamnus | Rhamnaceae > Rhamnus |
Sibling taxa | ||
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) |
Web links |