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1. Berberis vulgaris L. European Barberry. 
2. Berberis Canadénsis Mill. Ameri- 
can Barberry. (Fig. 1641.) 
Berberis Canadensis Mill. Gard. Dict. Ed. 8, no. 
2. 1768. 
Berberis vulgaris var. Canadensis Ait. Hort. 
Kew. I: 479. 1789. 
A shrub, 1°-6° high, with slender, reddish- 
brown branchlets. Leaves similar to those of 
B. vulgaris, but with more divergent and dis- 
tant teeth, or sometimes nearly entire. Avxil- 
lary spines 3-pronged; racemes few-flowered; 
petals conspicuously notched or emarginate at 
the apex; flowers about 3’’ broad, berries scar- 
let, oval or subglobose. 
In woods, mountains of Virginia to Georgia 
along the Alleghanies, and in Missouri. June. 
Referred by Regel to B. Sinensis Desf., as a va- 
riety. Readily distinguished from all forms of 
B. vulgaris by its dark-colored twigs. 
BERBERIDACEAE. 
[Vor IL 
(Fig. 1640.) 
Berberis vulgaris I. Sp. Pl. 330. 1753. 
A glabrous shrub, 6°-8° high, the 
branches arched and drooping at the ends, 
the twigs gray. Leaves alternate or fas- 
cicled, obovate or spatulate, unifoliolate, 
obtuse, thick, 1/-2’ long, bristly serrate, 
many of those on the young shoots re- 
duced to 3-pronged spines, the fascicles 
of the succeeding year appearing in 
their axils; racemes terminating lateral 
branches, many-flowered, 1/-2’ long (3/— 
4/ in fruit); flowers yellow, 3//-4/’ broad 
with a disagreeable smell; petals entire; 
berries oblong, scarlet when ripe, acid. 
In thiekets, naturalized from Europe in 
the Eastern and Middle States, adventive in 
Canada and the West. Native of Europe 
and Asia, running into numerous forms and 
varieties. Pepperidge-bush. May-June. 
3. Berberis Aquifolium Pursh. 
Trailing Mahonia. (Fig. 1642.) 
Berberis Aquifolium Pursh, Fl. Am. Sept. 219. 
1814. 
Berberis repens Lindl. Bot. Reg. pil. 1176. 1828. 
Mahonia repens Don, Gard, Dict. 1: 118. 1831. 
A low trailing glabrous shrub, Leaves 
petioled, pinnate; leaflets 3-7, ovate, oval, 
or nearly orbicular, obtuse or acute at the 
apex, oblique and obtuse, truncate or 
slightly cordate at the base, sessile, thick, 
persistent, finely reticulated, dentate with 
spine-bearing teeth, 1/-2’ long; racemes 
several, erect, dense, terminal, many-flow- 
ered; flowers yellow, 3/’-4’’ broad, short- 
pedicelled; bracts ovate, persistent; berry 
globose, blue or purple, about 3/’ in 
diameter. 
Western Nebraska and throughout the Rocky 
Mountain region, extending to, Arizona and 
British Columbia. April-May. 
