Edible plants are notoriously regional. Knowledge about one landscape doesn't translate into knowledge about another.

I wouldn't say I am enormously familiar with edible local plants. I guess know quite a few, and I know those very few that are poisonous.

But mostly, in this part of the world, it's all about calories. Plants that produce berries or nuts or have tubers that store starch get my close attention.

If it's just another kind of lettuce, I don't care.