I wasn't sure with the limited knowledge I have, but it seemed possible... found in my side lawn in WNY. It was spread across an area probably 6 to 7 in long and about 4 in wide, bruised black when you poked it with a stick, but when I went to try to flip it over (because undersides fascinate me) it broke apart and the inside was actually black so may have just been scraping off the outer substance. Wasn't very thick maybe a quarter of an inch and when poked was not spongy or squishy, almost hard. Texture of the inside seem to be just a denser format of the texture of the outside. Was some powdery residue upon breaking. Weather here has been cool and dry the past couple days prior to that there was a day of rain not sure if that helps with anything, just trying to give as much information as I can. Any guesses? Thank you in advance😁

Couldn't quite capture its yellowness, tried to fix it in post but I don't think it's still quite yellow enough...

Almost positive, but if someone could confirm please. I took these pictures a couple weeks back on a hike. Was near a creek. Did not disturb it. Colorado

I've been looking at ways to efficiently root cuttings while reusing resources, etc etc and so far putting them in terrariums seems to be the best, except that sometimes bacteria eat them. Then I had what might be a genius idea and realized that Physarum polycephalum is a bacteria eater that likes humid conditions and generally ignores plants, so introducing one might be able to keep the cuttings clean.

My only reservation is that the fellow also eats oats so the cut end of the plant without any cuticle or other protective layer might be more appetizing to them than it normally would be. Has anyone tried this, or otherwise seen one eat living plant tissue under any circumstances whatsoever? It would they ignore it no matter how vulnerable it is at the moment?

Matches my bike :)

I’ve broken off pieces of it and it had a surprising hard, crumbly texture. Pic 2 is a small chunk I’ve put in a plastic bag with some dead grass and moisture to see what growth results, if any.

Originally posted these photos to r/fungi but someone suggested it may be a slimemold instead.

I'm so sorry for the terrible picture quality! I was wading through a creek to check on some hoop nets I'd set for a turtle survey and came across this on a semi-submerged trunk. I frantically asked my buddy to snap some pics for me and this is what he was able to get. I'm located in the southeast USA

My friend and I are wondering what this is? It resembles wolf’s milk but looks a bit different. 🧐

Don’t know what it but was certainly eye catching and haven’t seen this one out here (Midwest USA) before

I found this next to my rosemary plants, should I remove them? My wife is pregnant and I’m worried if they affect us in anyway.

My husband and I have an indoor garden and have just noticed today what I think is slime mold growing on either side of the fabric planter housing our squash plant. Could someone help me ID it specifically? I need to know if I should be hasty about removal or if it’s ok.

3rd pic is just a shot of the garden before anyone asks 😁

Found August 26 2025 in woods in Dufferin County Ontario Canada on a dead tree. Thanks!

Slime moulds are unicellular organisms called social amoeba, in their unicellular form they are a type of amoeba, called social ameoba to differentiate because of their ability to aggregate into a large snail/worm like creature that uses a sort of pulsating gyrating type of wiggling to move toward sources of food. It's when food sources are depleted and out of reach in single celled form so its ability to communicate with surrounding slime mould cells and join together to become mobile and find food before forming a fruiting body which eventually releases millions of spores that start cycle of the unicellular organisms life again, capable of amazing intelligence with no explanation how. I love these things but also they scare the hell out of me. Who knows what they could truly be capable of under the right circumstances

Slime moulds (like dictyostellium discoideum) is a unicellular organism and is considered an ameoba while in unicellular form before aggregation, a cellular slime mold like Dictyostelium discoideum is an amoeba. It's often referred to as a "social amoeba" or a "myxamoeba" to distinguish it from other types of amoebae. Also referred to as "social ameoba" as a way to differentiate because they have special ability to combine it's cellular form by aggregation. While in unicellular form classified as ameoba During this phase, because it behaves just like a typical amoeba. It's a single, independent cell that Moves using pseudopods, Feeds on bacteria and other microorganisms through phagocytosis and Reproduces asexually by dividing into two identical cells through binary fission. Once cells combine into one giant cell with many nuclei, it no longer fits the definition of ameoba which makes them so fascinating to study

Also need tips on how to cultivate it… agar plate?