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Dahurian buckthorn

evergreen buckthorn, Italian buckhorn, Italian buckthorn

Habit Shrubs, 0.5–6(–10) m, unarmed.
Branchlets

purplish brown, puberulent.

Leaves

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

cymes or flowers solitary.

Pedicels

2–6 mm.

Drupes

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

stones 3.

Sepals

5.

Petals

0.

Rhamnus davurica

Rhamnus alaternus

Phenology Flowering (Feb–)Mar–Jun.
Habitat Woodland edges, fencerows, low areas, stream banks, canyons, arroyos.
Elevation 0–400 m. (0–1300 ft.)
Distribution
from FNA
CT; DE; IA; IL; KY; MD; MI; MO; NC; ND; NE; NJ; NY; OH; PA; RI; SD; TN; VA; Asia [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; Europe [Introduced in North America; introduced also in Pacific Islands (New Zealand), Australia]
[BONAP county map]
Discussion

Subspecies 2 (1 in the flora).

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

Source FNA vol. 12, p. 50. FNA vol. 12, p. 50.
Parent taxa Rhamnaceae > Rhamnus Rhamnaceae > Rhamnus
Sibling taxa
R. alaternus, R. alnifolia, R. arguta, R. cathartica, R. crocea, R. ilicifolia, 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
Subordinate taxa
R. davurica subsp. davurica
Name authority Pallas: Reise Russ. Reich. 3: 721. (1776) — (as davuricus) Linnaeus: Sp. Pl. 1: 193. (1753)
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