Don't eat this one.
False Giant Puffball
(Poison Goalpost Fungus)
Note the cracked surface about to erupt, ejecting enough spores to victimize up to 22 people at once!
photo by "Wildman"
This mushroom is so deadly, merely inhaling the spores rearranges your brain's neural synapses, making you race endlessly back and forth across a field, stopping occasionally to jump up and down and cheer or curse insanely, never resting until death from exhaustion ensues.
Victims of the false giant puffball in the throes of madness
Poisoning is so virulent, relatives of the victim, especially the parents, have been known to succumb as well!
Except for this species, the large puffballs have no poisonous look-alikes, so they're fair game for beginners.