Abstract
The historical background to the recognition of E. grandis as a species distinct from E. saligna is examined with a view to showing that there is a probability of hybridisation having occurred between them in the Australian zone in which they intermingle. This is claimed to be the cause of the confusion surrounding the identification of these species and it is averred that the botanical descriptions of Baker and Smith and of Blakely are to be preferred to that of Maiden in this instance. The distinguishing features between these species are discussed, as well as possible practical advantages of cultivating pure strains.

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