That is utter bovine fecal matter about the little brown mushrooms.
Utter, fucking, steaming piles of dog-originating hershey squirt biomaterial, dribbling with greasy, odious gobbets of diseased muslim spunk.
There are three primary causes of kidney failure in terms of toxic mushrooms and NONE are little brown lawn growers.
The main guilty party is the genus Cortinarius, the webcaps, in particular, a cluster of them within the subgenus Dermocybe (I THINK its dermocybe, been a while since I read any taxonomy textbooks on the genus Cortinarius), comprising C.spessiosissimus (try saying that name as quickly as possible on PCP or ket. The end result would sound hilarious to no end:D)
As well as C.semisanguineus, C.bolaris (possibly), C.limonius and C.orellanus.
One of those, either C.orellanus (oral anus? hahaha:P) or C.spessiosissimus was, a few decades ago, responsible for a mass poisoning epidemic in poland.
Quite a lot of people died miserably.
Trivia: most if not all of the subgenus Dermocybe, in the genus Cortinarius contain beta-carboline alkaloids that make the fungi fluoresce under UV ligh.
The toxins, orellanine and orellaninin are structurally quite similar to the toxic herbicide paraquat, based on a bipyridyl backbone and act as kidney fucking nephrotoxins. They are however, extremely slow in action, sometimes people will not begin to experience signs of poisoning until as long as three weeks to one month after consuming the webcaps. Upon which, the orellanine starts to wreak bloody havoc amongst the tubules of the kidneys. A kidney transplant is likely to be needed if a person be poisoned with these fungi.
It would be slow and excruciatingly painful as a way to die, and definitely, definitely, absograndmothersodomizing-bastarding-lutely way too slow to cheat the hangman.
Unless they were to be mixed in THEIR meal of course
The other nephrotoxic fungi are a couple of species in the genus Amanita, mainly A.smithiana and A.proxima. Prognosis of a poisoning equal in scale to the corts would very likely prove better than webcap poisoning. It is of a much, much more rapid onset, as do the other similar nephrotoxic Amanitas in the stirps Lepidella, the principle toxins being allenic norleucine, and chlorocrotylglycine.
http://en.wikipedia.org/wiki/Amanita_sphaerobulbosahttp://en.wikipedia.org/wiki/Amanita_smithianaThe other two fungi I can see causing acute kidney failure, are Tricholoma equestre, the knight on horseback, prized as an edible species, but it is indeed poisonous, multiple meals of the mushroom allow for the toxins to build up in-vivo until they can start doing harm. The kidney damage would be indirect, as along with a Russula species, R.subnigricans, they contain compounds that cause rhabdomyolysis (breakdown of muscle tissue)
The kidneys cannot cope with that kind of debris, and the tissue breakdown products start poisoning them. IIRC Russula subnigricans is quite a long way ahead of the mounted knight in terms of toxicity.
DirtDawg, please refrain from posting false information when it does or could relate to health and life. If in doubt, either stay silent upon the matter, or consult me, I will most likely know what the score is.