1 Fruit 3/4″. wide or wider; flowers red, orange, or pink……….Corymbia ficifolia
1′ Fruit <1/2″ wide; flower variously colored
  2 Petals fused into a bud cap……….Eucalyptus
  spp.
  2′ Petals not fused
    3 Petals white; bark cinnamon-
    brown……….Lophostemon confertus
    3′ Petals yellow; bark gray or
    white……….Tristaniopsis laurina