Eucalyptus wilcoxii - Deua Gum (New South Wales) A small gum, probably hardy to below 10°F.
Eucalyptus williamsiana -William's Stringybark (New South Wales) Possibly worth a trial in zone 8.
Eucalyptus willisii - Grampians Shining Peppermint, Shining Peppermint (Victoria) A small peppermint of coastal areas and lower mountain ranges in Victoria. This species reaches around 30 - 40' tall and sometimes has multiple trunks, but is always attractive and ornamental. The bark is smooth, and the leaves are green and shiny. It is quite a variable species, and ssp. falciformis from the Grampians exists. Closely related to E. nitida. Probably hardy to around 10 - 17°F.
Eucalyptus index page | Eucalyptus V | Eucalyptus Y