lots of ice plant (delosperma genus) in socal by the beaches.
supposedly some species are active (i would think its relatives are worth researching/testing).
there are a few untested fabaceae in the cassia/senna and calliandra geni, which may or may not contain actives. apparently opuntia species can contain DMT, but only in borderline negligible amounts.
if you know where some mesquite trees are, they might be worth looking into as well.
you can also probably find some phalaris around.
also, consider growing your own sources out in the wilderness or at home.
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