..the aussie Acacias cyclops (1 report 'spice'

and baileyana (tryptamines & ß-carbolines) are weeds in cali..also longifolia, of which only some strains contain tryptamines..in the south is the american A. gregii which had one rough test finding phenethylamines in the '60s, fairly unknown..
..so there's no sure-fire all-out spice acacias, but a few potential candidates..there's a californian native acacia A. pringelli which has never been chemically studied..