If this is what I think it is - a very large Vulnerable species of wattle from the Northern Rivers/SEQ -then I have a large number growing - they are very slow (even on the best of sites) and seed must be fresh to germinate...
They can take in excess of a year to germinate. I have had the lowland variety germinate within 6 months though.
A friend collected some of the highland variety about 11 months ago - they germinated en-masse over the last couple of weeks.