Shrubs and tree
Leaves opposite
Leaves leaf-like
Leaves simple
Flowers not in compact head
Not Eucalyptus
Perianth small, inconspicuous
Branch tips not spiny
Leaves not "teatree" smelling
Leaves not palmately lobed
Stamens 6 or less
Flowers not in panicles

FAMILIES REMAINING:

PHYLLANTHACEAE

OLEACEAE

RUBIACEAE

SCROPHULARIACEAE