Blue gum is a common name for subspecies or the species in Eucalyptus globulus complex, and also a number of other species of Eucalyptus in Australia. In Queensland, it usually refers to Eucalyptus tereticornis, which is known elsewhere as forest red gum.
Eucalyptus globulus Tasmanian blue gum: Eucalyptus globulus (syn. E. globulus subsp. globulus) Gippsland blue gum: Eucalyptus pseudoglobulus (syn. E. globulus subsp. pseudoglobulus) Spotted blue gum: Eucalyptus maidenii (syn. E. globulus subsp. maidenii) Southern blue gum: Eucalyptus bicostata (syn. Victorian blue gum or E. globulus subsp. bicostata)
Other Eucalyptus species Inland blue gum: E. leucoxylon Large-fruited blue gum: E. leucoxylon Mountain blue gum: E. cypellocarpa, E. deanei Round-leaved blue gum: E. deanei South Australian blue gum: E. leucoxylon Sydney blue gum: E. saligna Other species, such as shining gum (E. nitens), and the Sydney blue gum (E. notabilis), are sometimes regarded as blue gums Historically, the Dictionary of Australian Words also mentions E. botryoides, E. diversicolor, E. goniocalyx and E. viminalis (the famous "manna gum") in its list of "blue gum" species.
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