Recently new research has shown a new plant on the block containing the highest amounts of DMT to be found yet. Acacia Confusa a plant that grows in the United States including some Pacific areas contains yelds up to 1.15% of N,N-dimethyltryptamine. Dont eat the seeds though as they can cause death.
Read more about the recent discovery here
or check out more about the plant and where it from from these two links: