Identified as L. lanigerum rather than L. grandifolium on the basis of leaf shape (more linear) and (glabrous on both surfaces).
Occurring on floodplain beside Numeralla River, but set back from river.
Most were wholly or partly senescent (brown leaves only) and in very poor condition, presumably stressed by dry conditions: a few had just one or two branches still with green leaves, and were flowering. Some closer to river were not so stressed.
I tend to think it is grandifolium because of the way the bark is peeling off in strips. Lanigerum has compact bark. My reading of the Plantnet descriptions and of the couplet in the key also suggests grandifolium (leaves 3-7 mm wide, lower surface felted to glabrous). Lanigerum has leaves 2-4 mm wide and the leaves pubescent at least on the lower surfaces. Both species can occur along streams.
The two species are difficult to tell apart. My original thought was lanigerum because in my experience lanigerum is at lower altitudes and on stream banks while grandifolium is at higher altitude in rocky areas but the bark cannot be other than grandifolium. Vicflora certainly in general has much more detailed descriptions. The keys in both Vicflora and Plantnet are about as easy/hard to use as each other, when they don’t both copy from the original species description.