Bologna
(zombie) woof.
Image: Golden Wattle (Acacia Pycnantha) in flower. DMT is a naturally occurring compound found in members of the Acacia species, many of which are native to Australia.
Hmm...can't find LSD to try, might press some wattle flowers
Erowid Psychoactive Vaults : Australian Natural Highs FAQ
Frequently Asked Questions about natural highs - Supplement.
erowid.org
How to Get a Buzz in the Australian Bush
As with most countries on the planet, Australia has a range of indigenous chemicals which can be turned into all sorts of drugs.
www.vice.com
I would guess shrooms are sassafras (mdma) are your best bets for finding natural hallucinogens near you...