@Blickers,
those plnts still contain various alkaloids. Potatoes and tomatoes contain solanine which needs a fairly hefty dose to kill you but if you eat the leaves and stems of the plants, it CAN make you wish you were dead.
Chili peppers contain capsacium which, while it has a toxic affect on some folks, wont kill youbut will give varying degrees of diarrhea .
Peach pits and walnut husks still do contain a glycoside cyanogen but the almond source "bitter" apricots are usually steamed or dried which, like casava root, will drive off the cyanide. Cherry pits also contain the cyanide inside the pit. Apple seeds are really dangerous if you chew on em. It doesnt take much ctanide to do you in
cyanide is one of those defense chemicals that made several plant groups "invincible" to pests or it would allow the plant to colonize an area by poisoning the substrate.
We sometimes brow a Sudan Grass pasture mix to improve soil tilth in fallow pastures. We can let cattle graze there all summer and early fll. BUT , once a frost hits it. It becomes a deadly cyanide carrying grass that can be smelled acres awy. Many farmers have lost prize dairy cattle by forgetting to get the girls out of a lush SUDAX pasture that has been hit by a light frost.
This is just something that all farmers have to know to protect from inadvertently killing your stock by improper grazing.
NEVER would we allow a walnut tree in any pasture. Its a silent killer. If you ever go to a walnut grove, you will see very few different weeds growing benath the trees. Mostly youll see mosses and a very few leafy plants