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barberry family

Habit Shrubs or herbs perennial, rhizomatous.
Stems

sometimes spiny.

Leaves

basal or alternate; simple or pinnately or ternately compound.

Inflorescences

racemes; panicles; umbels, or spikes.

Flowers

radially symmetric; bisexual, hypogynous;

hypanthium absent, sometimes with 3–9 bractlets forming an epicalyx appressed to calyx;

sepals 6; free, sometimes falling as flowers open, or absent;

petals 6; free; showy, producing nectar, or absent;

stamens 6–18; free and distinct, often same number as petals and opposite them;

anthers opening by apical flaps or longitudinal slits;

pistils 1; superior;

placentation basal or lateral;

styles short or obsolete.

Fruits

berries or capsules.

Seeds

1–10 per fruit, sometimes bearing an aril.

Nandina domestica

Berberidaceae

Distribution
[WildflowerSearch map]
[BONAP county map]
[BONAP county map]
Discussion

East Africa, Asia, Europe, North America, South America. 15 genera; 3 genera treated in Flora.

The structure of the pistil in Berberidaceae can be confusing, and its homologies are uncertain. Berberidaceae taxa have a single pistil with a single unlobed stigma and an ovary having a single locule. Most taxa have one or a group of basal ovules. A few taxa (including Vancouveria) have more complex pistils, but their structure is difficult to interpret. It is uncertain whether the pistil evolved from a single carpel, like the pistils of Ranunculaceae, or from several fused carpels, as in Papaveraceae (Cronquist 1981).

Source Flora of Oregon, volume 1
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