Adenium

Adenocarpus

Amorpha

Andromeda

Arctostaphylos

Argyrocytisus

Buddleia

Camellia

Caragana

Ceratonia

Cercis

Clethra

Corylopsis

Corylus

Crataegus

Cytisus

Distylium

Encelia

Enkianthus

Eriogonum

Exochorda

Franklinia

Fremontodendron

Hakea

Hamamelis

Hovenia

Kerria

Lagerstroemia

Leucothoe

Loropetalum

Maackia

Magnolia

Menziesia

Neviusia

Olneya

Parkinsonia

Parrotia

Parrotiopsis

Pieris

Pittosporum

Punica

Quillaja

Rhododendron (defines evaluations)

Robinia

Salix