I saw one (similar) for the first time when I was about 10 in the cotton field behind our house in Mississippi. I knelt down to get a good, close look at it, breathed in, and almost fell over from the smell! it freaked me out for a few days! but super cool. I tried to explain it and go show my buddies the next day but it was gone!!!
we have them here in our yard as well. More of them seem to appear in the areas where we used Mushroom Compost. I love mushrooms!