Lemon Ironbark (eucalyptus staigeriana)
 
A gentle lemon aroma accompanies this eucalypt from Cape Yorke and Northern Queensland.   Unlike most eucalyptus oils, it is calming rather than stimulating.  It has antibacterial, antiviral and anti-inflammatory properties and is used for treating respiratory complaints.  Blend with peppermint gum, eucalyptus, white cypress or fragonia.