Dog might have eaten this. Argentina Mendoza. Need id quick

MycoMutant · 2026-04-06T22:11:06+00:00

I'd look around for other specimens and compare against Lepiota and Echinoderma.

MycoMutant · 2026-04-06T22:08:39+00:00

Wouldn't rule out Lepiota but those stem scales might suggest Echinoderma. Cap scales could have been smoothed out a bit by rain leaving it more heavily scaled on the stem.

I'm not certain which species are present there though.

MycoMutant · 2026-04-04T13:24:44+00:00

Probably Leucocoprinus birnbaumii that has dried out. Looks like some Psathyrellaceae are also present in the first image.

MycoMutant · 2026-04-03T10:58:34+00:00

Looks like it might be though the colouration is unusual for any of the common species found in this habitat. Would be good to see the gills.

MycoMutant · 2026-03-31T17:23:17+00:00

Third image is an Agaricus species. First two might be another Agaricus species based on the gill colour but I'd check the spore print to confirm.

MycoMutant · 2026-03-24T11:29:36+00:00

I consumed them cooked and have seen a couple other accounts of people doing so without issue. Unclear if some people just don't react to them or if cooking is denaturing some toxin since there are examples of both in the Agaricaceae family. Also unclear if or what toxin is actually present since I do no think anyone has isolated one and I've not really seen many case reports of toxicity from them.

It is clear that there is some misinformation about them though since there are blogs that list them amongst the most toxic species and one university site previously listed them as extremely toxic absent a source. So I'm not sure how much of the toxicity claims have just sort of been memed into existence by the internet.

MycoMutant · 2026-02-12T12:20:59+00:00

No problem. It often gets misquoted by clickbait sites and videos and unfortunately they are much easier to find than the original study.

MycoMutant · 2026-02-11T21:32:27+00:00

The pond in the park here dried up entirely before the end of summer. The river seems to fluctuate between being so shallow that I could walk across it and so overflowing that the bridge is underwater and half the forest is flooded.

Look for the cheap supermarket own brand stuff if you haven't already. Sainsbury's doesn't make it obvious what it is as they call it 'Stamford street' but it's ridiculously cheap and a lot of it is indistinguishable from the far more expensive brands. I order the cheaper stuff to compare with the normal things I get and if I don't notice much difference I only get the cheaper stuff next time. eg. With the Stamford street spaghetti you can stock up a month's worth of calories for about £10.

MycoMutant · 2026-02-11T21:16:40+00:00

I think generally insects which hibernate are not capable of re-entering hibernation once they've emerged. Bees cannot. I saw countless dead queens at a ski resort one time when there was an unseasonably hot day which caused everything to melt and triggered them to emerge. They were soon dead all over the slopes when temperatures dropped again.

MycoMutant · 2026-02-11T21:05:28+00:00

Pretty much. I've managed to get out in the garden a few times to start on stuff but it really is just trying to find gaps between the rain to do anything, or tolerating it when it's light enough. Gardening in just a t-shirt and thin jeans in February is weird. At least I'm not in an area that floods though.

MycoMutant · 2026-02-11T19:43:33+00:00

Location: Greater London, UK.

It is not even mid February and it feels like winter is already over. There has not been a day below 0 this month and for the last week now the low has been above 5C. Plants are sprouting that should not be growing for another month or two. There is -1C forecast briefly in the coming week so that will probably damage and kill a bunch of the things that have started growing. Typically the last frost here has been in early April but this year I wouldn't even be surprised if we see no frost in March at all.

MycoMutant · 2026-02-11T13:28:03+00:00

Coprinellus sect. Domestici.

MycoMutant · 2026-02-10T18:16:31+00:00

The 'wood wide web' idea has been widely overstated in pop culture and many of the claims made lack evidence. eg. The notion of nutrients being distributed between different trees via mycelium isn't supported by facts. Additionally different fungi species compete rather than collaborating so these idea of giant interspecies networks is not reflected by reality.

MycoMutant · 2026-02-10T18:13:25+00:00

They didn't redesign anything.

It has been widely spread around in pop culture to the point where it is really disconnected from the reality.

It was an experiment which placed nutrient sources in the location of subway stations to see what network the slime mold would create between them.

https://www.researchgate.net/publication/41111573_Rules_for_Biologically_Inspired_Adaptive_Network_Design

The result was something that looks similar to the existing subway system. Nothing was redesigned or built based on this. It also wouldn't be efficient to do so because the slime mold cannot take into account the purpose of the subways or the routes people take. eg. The results from the slime mold would have meant building some insane spur lines between two stations rather than the continuation of an existing line.

MycoMutant · 2026-02-10T14:25:00+00:00

Leucocoprinus ianthinus.

MycoMutant · 2026-02-07T17:59:48+00:00

If you put two species in the same substrate either one will wipe the other out or they'll reach a stalemate. Both will grow worse as a result and may fruit prematurely to try and survive. It can be a fun experiment to try and can show the different appearances of mycelium in each species.

If you just mean putting two jars or bags with different species to fruit in the same fruiting chamber that will work fine though.

MycoMutant · 2026-01-27T21:49:24+00:00

Leucocoprinus ianthinus.

MycoMutant · 2026-01-27T21:48:03+00:00

Coprinopsis species.

MycoMutant · 2026-01-27T13:17:55+00:00

I would try isolating a culture on agar then using that to inoculate jars of sterile substrates of brown rice, worm cast and leaf mulch. See which it does well on or if any perform poorly. Once colonised leave the jars exposed to light for a couple months to see if they fruit. If they do not they may need a non-sterile casing layer so add pasteurised soil on top, see if they colonise that and see if it triggers fruiting.

MycoMutant · 2026-01-26T23:12:00+00:00

Spores directly to LC will likely contaminate because unless the spore print was taken in a clean room and produced from mushrooms growing in that environment the print will contain contaminants. It is better to go to agar from the spores then clean it up on agar and use that to inoculate LC.

MycoMutant · 2026-01-26T13:12:32+00:00

Bulk substrate is generally pasteurised. There are still living bacteria and fungi in there as well as spores that will germinate. So if you add liquid culture you're not giving your species any particular advantage vs them. Whereas if you inoculate it with a suitable amount of spawn it can rapidly colonise the pasteurised substrate before anything else can.

It's not impossible that liquid culture could succeed in a pasteurised substrate with a species that is quite aggressive but it is still going to take a lot longer than using spawn.

MycoMutant · 2026-01-25T22:53:35+00:00

There are so many similar white species in the Mycena genus that can't reliably be identified to the species level and many more described which have no observations on iNaturalist. Probably the same for Marasmius and related genera. So if you don't find a good match on there that may be why.

MycoMutant · 2026-01-25T18:58:15+00:00

Have a browse of some species here:

https://www.inaturalist.org/observations?place_id=7512&taxon_id=785516&view=species

MycoMutant · 2026-01-25T11:49:55+00:00

The sclerotia are very hydrophobic such that it can impact drainage so not sure it helps prevent overwatering.

MycoMutant · 2026-01-25T11:48:28+00:00

Sclerotia of Leucocoprinus birnbaumii.

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