Free growing Poisons?

[General Pain]

I was first looking for medical herbs etc and the thought hit me....what about poisons!

So If anyone can provide with a list of freegrowing poisons in the US or anywhere basically...

poison mushrooms
poison ivy
others

animal posisons should have their own list imho.

What could a t2K character do with this info?

1 : When production of firearms/ammo is over. Any citizen conserned with security would turn to the alternatives...

- Blackpowder weapons
- bow and arrow
- spears
- basically any melee weapons
- perhaps even siege weapons

And if you have 100 archers with poison on their arrows - you have yourself a pretty decent low end army. Atleast the ammo is abundance

2 : Poison is like a kevlar-suit you'd rather have it and have no use for it than ,not have it and have use for it

I'd appreciate if said plants have their latin name - cheers