Rhamnus ilicifolia |
Rhamnus pilosa |
|
---|---|---|
evergreen buckthorn, holly leaf redberry, redberry |
hairyleaf redberry |
|
Habit | Shrubs or small trees, 1–4 m, unarmed. | Shrubs, 1–3 m, unarmed. |
Branchlets | gray, stiff, glabrous or densely and softly hirtellous. |
gray, flexible, sparsely to densely softly hirtellous. |
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 2–5 mm; blade dull green abaxially, darker green adaxially, ovate to broadly oblong or orbiculate, 1.5–2 cm, distinctly coriaceous, base cuneate to nearly truncate, margins spinulose, apex rounded, both surfaces sparsely to densely softly hirtellous; secondary veins 5–7 pairs, all diverging at nearly same angle. |
Inflorescences | fascicles or flowers solitary. |
fascicles or flowers solitary. |
Pedicels | 2–4 mm. |
2–4 mm. |
Drupes | red, globose, 4–6(–8) mm; stones 2. |
red, globose, 5–6 mm; stones 2. |
Sepals | 4. |
4. |
Petals | 0. |
usually 0, rarely 4. |
2n | = 24. |
|
Rhamnus ilicifolia |
Rhamnus pilosa |
|
Phenology | Flowering Jan–Jun. | Flowering Apr–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. | Granitic substrates, clay soils, sandstone, woodlands, chaparral, coastal sage scrub. |
Elevation | 100–2200(–2400) m. (300–7200(–7900) ft.) | 100–1700 m. (300–5600 ft.) |
Distribution |
AZ; CA; NV; OR; Mexico (Baja California)
|
CA |
Discussion | Rhamnus pilosa is known only from San Diego County and extreme southwestern Riverside County. The species has been reported from Arizona and Mexico (Baja California) (USDA Plants Database, based on L. Abrams and R. S. Ferris 1923–1960, vol. 2), but no specimens have been found to support this claim. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 12, p. 48. | FNA vol. 12, p. 48. |
Parent taxa | Rhamnaceae > Rhamnus | Rhamnaceae > Rhamnus |
Sibling taxa | ||
Synonyms | R. crocea subsp. ilicifolia, R. crocea var. ilicifolia | R. crocea var. pilosa, R. crocea subsp. pilosa |
Name authority | Kellogg: Proc. Calif. Acad. Sci. 2: 37. (1863) — (as ilicifolius) | (Trelease ex Curran) Abrams: Bull. Torrey Bot. Club 37: 153. (1910) |
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