Herbs, perennial; unarmed. Leaves alternate, pinnately compound (ternate); stipules persistent or deciduous, free; venation pinnate. Flowers: perianth and androecium perigynous; epicalyx bractlets absent; hypanthium tubular to campanulate; torus absent; carpels 5, basally connate (becoming distinct at maturity), adnate to hypanthium, styles terminal, distinct; ovules 2–4, basal, collateral (obturator present). Fruits aggregated follicles; styles tardily deciduous, elongate.

Distribution

North America

Discussion

Genus 1, species 2 (2 in the flora).

The base chromosome number for Gillenieae is x = 9. Gillenia is host to Gymnosporangium and Phragmidium rusts.

Selected References

None.

Lower Taxa

Amelanchier, Aronia, Chaenomeles, Cotoneaster, Crataegus, Cydonia, Eriobotrya, Gillenia, Heteromeles, Malacomeles, Malus, Mespilus, Peraphyllum, Photinia, Pseudocydonia, Pyracantha, Pyrus, Sorbus, Vauquelinia

"thin" is not a number.