That has smallish pinna that look like C.distans, but without the hairs. If the fronds spread into a pretty lacy arrangement, 3-6+ cm across, then C. austrotenuifolia. Need to take a closer look, possibly when the plant(s) have grown a bit more, before we can be sure of the species. Murphy's law, of course, says it's a hybrid.
Paradoxically, the best C. (austro)tenuifolia I have seen have all come from Radiata pine plantations. Worth checking the Mt Majura plantation to see if they are still there (I last visited it in 1979)