Azara

Baccharis

Berberis

Brachyglottis

Corylopsis

Elaeagnus

Enkianthus

Grevillea

Hamamelis

Kerria

Mahonia

Menziesia

Morella

Notholithocarpus

Paeonia

Parrotiopsis

Quillaja

Rhododendron (defines evaluations)

Rhus

Ribes

Salix

Stachyurus

Stewartia