Androcalva fraseri
Androcalva rossii
These are not in Dick’s creek reserve but have been observed in abundance in nearby bush.
These species get confused with each other. Differences are discussed here: https://southcoast-nsw.naturemapr.org/species/747
The photos below was an immature tree in Glenrock State conservation park.
Is it poisonous?
I don’t personally know but it is not listed as a source of food from what I can see so I think the answer may well be ‘yes’.