Eucalyptus camaldulensis subsp. camaldulensis, characterised by its distinctly-beaked bud caps, in which the caps have concave sides. This is the common 'Murray-Darling basin' subspecies of river red gum, and thus is sometimes known as Murray red gum. It occur thoughout the Murray-Darling drainage basin in NSW, Qld, Vic and SA, and extends westwards to Kangaroo Island and Eyre Peninsula in SA.
Eucalyptus camaldulensis subsp. arida, characterised by its more rounded bud caps, in which the caps have convex sides. It also sometimes has pruinose (waxy-white) branchlets, as seen in this pic. This is the inland subspecies of river red gum, and thus is sometimes known as the Centralian river red gum. It has a scattered distribution along larger ephemeral watercourses in north-western NSW, western Qld, northern SA, southern NT and westwards to the west coast in WA.
Eucalyptus camaldulensis subsp. acuta, characterised by its long-conical caps, in which the caps have straight sides. This is the north-eastern subspecies of river red gum, scattered through Qld and extending into northern NSW, where its distribution is poorly understood. Our fieldwork is helping to resolve the status and distribution of this subspecies in NSW.
Just back from three weeks of eucalypt fieldwork in NSW. The state has 3 subspecies of river red gum (E. camaldulensis), which differ from one another most notably in the bud shape.
🔲⬛⬛ subsp. camaldulensis
⬛🔲⬛ subsp. arida
⬛⬛🔲 subsp. acuta
