Greetings! This is my first post here and it's great to see an active group of fungus fanciers. I took the plunge last week and ate my first Hericium (not sure which species, but looked closest to H. coralloides or H. americanum depending on which name I find attached to the pictures). Great flavour and texture and you gotta love such a safe genus. My wife's comment was, "Who needs lobster?"
In any case, if I'm going to learn mushrooms, I need to start collecting and identifying (I'm an entomologist by training, so this is second nature). I found a trio of mushrooms this morning on the grass outside the building where I work (Maryland). No trees or other vegetation nearby; this 3-point group was on a slight curve, so it may be part of a larger ring. Took a spore print from the middle one and picture from the youngest specimen; the oldest was trampled. No volva on either specimen, remnants of a partial veil on margin of cap although I don't know how to characterise the partial veil yet, but based on description, I would call it membranous. The older cap (maybe 5 cm diameter) had much darker brown gills than the younger specimen (3.5 cm diameter) and the cap itself was almost completely flat compared to the younger one's domed shape. There was no latex and the white flesh bruised just a bit darker (tan or brown). As far as I can tell, this would key out to an Agaricus, but that's as far as I could go with it from the key I ran across at http://americanmushrooms.com/monenaag.htmwithout a microscope.
And no, I don't plan to eat it. In fact, I don't plan to eat any gilled mushrooms based on my own identification until I learn all the characters and honestly, probably not even then. Making a mistake on a beetle identification won't land me in the hospital (or worse). I'd appreciate your opinion and/or education on where I went wrong if I am mistaken. Thanks in advance.