Just in case anyone's been living under a rock, by far the best source for Aussie native seeds is Nindethana in southern WA.
http://members.iinet.net.au/~nindseed/
Ordering seeds from anywhere can be risky in terms of viability etc., but generally speaking, i'm a great fan of Nindethana. Certainly i have had far more positives than negatives with them. Check out the catalogue!
