a number of fungi of the same genus at different stages of development
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
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what did it smell like?
these fungi smell like edible mushrooms
Its not the Macrolepiota. It is an Agaricus, trouble is there are a few that look a bit like this, The Prince (Agaricus augustus) usually has a strong smell of bitter almonds and is very distinctive.
Is this genus edible or does it vary between edible and stomach ache?
Really you should heed the warning at the beginning of the identification listing that ispot is not to identify fungi to eat. Having said this and assuming that this species is an Agaricus then the edibility varies as you have described. One of the most interesting species in the genus being Agaricus xanthodermus (which is not the species you found) as it causes severe symptoms in some people whereas other people are unaffected.
Thanks, I don't pick fungi to eat because I have n't the body of knowledge to identify, but it is interesting to learn about poison and edibility, especially that fungi because it re-occurs in my garden.
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