Hello and welcome to the DMT-Nexus! Rätsch mentions Acacia cornigera as being psychoactive in his 'The encyclopedia of psychoactive plants'. Other than that, I can't seem to find any information on it, sorry. I would assume a DMT content no higher than 0.5% (perhaps much lower), as seen with the other Acacias. I would also assume other tryptamines to be present.
It may be worthwhile to do an extraction on the phyllodes or the bark. If you choose the root bark, please make sure you only cut roots not vital to the tree, as there's no reason to kill a tree to harvest spice. Should you attempt an extraction, please post your results here, as it in the future will do great help anyone else in your position!
