Shrubs; unarmed. Leaves alternate, simple; stipules persistent or caducous, free; venation palmate. Flowers: perianth and androecium perigynous; epicalyx bractlets absent; hypanthium cupshaped to campanulate; torus absent; carpels 1–5, basally connate (distinct when single), free, styles terminal, distinct; ovules 2–5 [–10], marginal, pendulous, biseriate or clustered. Fruits solitary or aggregated follicles; styles persistent, not elongate.

Distribution

North America, n Mexico, Asia, in Europe

Discussion

Genera 2, species 21 (2 genera, 7 species in the flora).

The base chromosome number for Neillieae is x = 9. Cyanogenic glycosides are absent in Physocarpus; there are no data on Neillia.

Selected References

None.

Lower Taxa

Neillia, Physocarpus

Key

1	Inflorescences corymb- or umbel-like racemes; carpels 1–5; fruits usually aggregated follicles.	Physocarpus
1	Inflorescences racemes or panicles to corymbs; carpel 1; fruits solitary follicles.	Neillia

"thin" is not a number.