Ah they look like a very stiff, upright and thick nipple, under no circumstances flat. I guess the more experienced guy (pusher man?) ate the whole bag at once, or sold it
Seriously you can find them on cow pastures, only there look for small spots where the grass is longer and more green, that is where a cow has shat (or shitten, idn) some time ago. Caress softly over the grass there and the liberty cap will show up. Try a little piece of a stem. It´ll make you fly, totally. And it´s healthy, no chemical substance, all natural. Dry the other ones on paper in the shadow, to keep them for later. And don´t do a lot of beer, these little guys don´t like too much of the stuff and just go away, and you land, drunk, and that is not awesome. If you have any further questions contact me.
Don´t fear the reaper and have fun!