Cyans seem to like the cold. I find them when the lib season ends, and its got really cold. Printing is vital. Libs don't have deadly lookalikes, wavy caps have Conocybe filaris and Galerina autumnalis. All psilocybes have violetish black spores, the two amatoxic genera have rusty brown prints. Galerina have slight scales on half-ish of the stems length, C.filaris bears a transient ring also. The meixner test with HCl and a high lignin paper like newspaper will give after application of conc. HCl to a mashed sample of fungus tissue onto newspaper a blueish grey ring on indoles. Amatoxins and psilocin cross react with 100% certainty, so the Meixner test will determine if you have a mushroom that bears amatoxins or tryptamines but cannot tell between the two. After dropping a spot of HCl onto a sample of an amatoxic species or a psychedelic tryptamine bearing species crushed up onto high lignin paper (be aware that lab filter paper does not contain sufficient lignin for use here in this test often, so use a wood pulp based, high lignin paper, newspaper works though) a colored halo will form round the mushroom if it contains either amatoxins or psiloc(cyb)in.
Test takes 20 minutes or so, and is extremely sensitive, capable of revealing 2 micrograms per mililiter of amatoxin/psilocybin and can be acelerated by keeping the sample warm. Take controls with inactive, blank spots. Meixner test will not tell you WHAT is in the mushroom, but can be used to tell you one of the two is indeed present and you have a mushroom containing indoles. Both poison and drug react. As will tryptophan, a common constituent in many substrates. So it can be used to distinguish a possible C.filaris/deadly galerina/Psilocybe from a nontoxic, nonpsychedelic little brown mushroom, AKA LBM as we mycologists call your generic small brown mushroom.
You must familiarise yourself with Conocybes and Galerinas as well as desired species if you seek wavy caps. They look similar and can grow together in the same patch of woodchips, but spore printing will reveal a hidden nasty by the rust brown spores for either of the two little bastardlyshite LBM fakes, instead of the violet-blackish print of a Psilocybe cyanescens.
Know your mushrooms. Print every single shroom, the prints can be used also for establishing new spawn if you can master basic sterile lab technique, culture on potato-dextrose agar with an antibiotic, such as a penicillin, chloramphenicol is good in particular, avoid metronidazole as it only selects against anaerobes really. Do not take risks, and know the signs of amatoxin poisoning. A characteristic delayed onset of extreme nausea, vomiting, profuse diarrhea, stomach pains followed by a remission of symptoms on maybe 2 days post onset of poisoning, this is a false recovery, fulminant liver failure follows, as well as potential kidney failure. Early response is VITAL in amatoxin poisoning, the poison undergoes reabsorption via bile, and enterohepatic recirculation, causing the poison to be continuously recirculated for another pass, trashing the liver every time it goes around again until you die horribly.
Liver transplant is a life saver, there is no antidote, but survival rates have been improved by intravenous silymarin, massive doses of penicillin-K and supportive intensive care. P.cyanescens is an extremely potent species, containing a shitload of psilocin, and psilocybin. IIRC cyans contain more psilocin psilocybin, which is less stable, and stores less well over time. Keep in a dry environment, like a sealed glass jar, away from light. Adding a packet of dried sillica gel will help store them better, and if you want to be really thorough, packets of oxygen absorbent, such as those found in packets of beef jerky, or better yet, argon welding gas from a disposable cylinder to exclude air will preserve the mushrooms very well indeed over extended periods.
I am happy to help ID mushrooms of any sorts, post photos including spore prints, taken by placing the caps, with the stem snipped off by the side, as well as photos of the entire fresh mushroom , on aluminium foil. I cannot take the responsibility of telling you 'this mushroom should be eaten' but I can certainly help aid IDs. I know my fungi very, very well, selftaught since I was a little kid, been hunting for many years, so I have a pretty good mastery of the subject and an extensive realm of mycological experience, so fire away people. I'm the fun guy for fungi around these parts and am the one to come to.
If I haven't responded, PM me after a few days if needs be to draw my attention. I am not a very social interaction-inclined person and often go for ages without speaking to, or seeing anyone, but a PM will alert me by email, IF I haven't responded and as such, have possibly missed an iD request on the forums and have neglected to look online anywhere. Just remember that while I am very well knowledgeable about fungi, botany, I am NOT a substitute for attention, learning, and a careful, responsible examination of the mushrooms you have. I am happy to lend my expertise, but the responsibility for careeful identification lies with YOU. Failure to be careful, means potential slow, agonising death. There are old mushroom hunters, and bold mushroom hunters, the proverb goes, but there are no old, bold mushroom hunters. Be responsible for conservation of the mushrooms. Smash up old, tattered and torn specimens, and distribute them over the suitable habitats, leave some mushrooms to develop, and drop spores to continue the reproduction and grow more mushrooms so as to not exhaust the area. Leave the very young mushrooms to develop, and not pillage the land. If everyone takes the young ones, before they have chance to mature and drop spores, there will be none for other people, and none for you either next year.
If you can, culture, and establish new spawn beds. It isn't difficult, and the rewards for careful and patient practise will be obvious. When you go out hunting...bring some plastic bags with you, and take away the rubbish from the woods that other people leave. Its fucking disgusting what people drop...one time recently, I took home a plastic laminated sign saying 'forrestry work in progress, keep away', that had simply been dumped afterwards and left to contaminate the land, filthy, vile plastic waste left behind by the very people who should know better. From a small clearing, 3-4 carrier bags of metal, plastic bags, fag packets, sweet wrappers, drink cans, bottles...fucking wankers. What you take away from nature with one hand, give back with the other, or we kill ourselves by shitting on our own doorstep and befouling the air we breathe, and soil we walk on.
Fair enough if you want to shit on your own doorstep...but do not do it on mine, and do not do it on other's either. So that means, be responsible and mindful of what we take from nature. This isn't attacking anyone here, but I see it everywhere I go when I am out in the woods or hiking, and it disgusts me. One person alione, like me, will have little impact, its a losing battle I know, but we all must do our part. Tell other people to do the same, maybe we will still have somewhere to live 200 years from now if enough people do.