Looks like I have a project later XD
BTW if anyone is interested in getting in the weeds a bit on Auricularia, this paper (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8625027/) is recent (2021) and does a good job breaking down the ranges and differences between different species / groups.
Most of the ones that are getting confused with other jelly fungus species in the US are probably A. americana, A. angiospermarum, or A. fuscosuccinea (the last one is a southern US species)
EDIT: Honestly there’s a ton of wood ear fungus across the eastern US that are probably wildly IDed, that paper lists A. fuscosuccinea as a southeastern species but INat has research grade observations as far north as like… northern Indiana or New England. That doesn’t seem correct, though I wish I knew someone who was a little better at these guys to confirm my suspicions
@NoGenAI I know you know a bit about jelly fungi, any insight on Auricularia ranges?
EDIT 2: If you want to help knock any of these out without having to get too granular, anything that’s a cap & stem mushroom with gills or pores is pretty safe to put in Agaricomycetes. Also shelf fungi.
Also if you can’t tell if its Exidia or Auricularia, Auriculariaceae is an okay guess
EDIT 3: Since I forgot to mention - AFAIK A. americana is the only species of Auricularia in the US that grows on conifer wood. So if its on confier in the US, its safe to mark to species. A. angiospermarum and A. fuscosuccinea both grown on angiosperms, and are visually… pretty close, all three are visually really close, so the latter two probably come down to a range issue, or honestly, microscopy unfortunately
EDIT 4: Also TBH don’t stress too much if some of these are unidentifiable - a lot are never going to get past Agaricomycetes
EDIT 5: Slightly older paper but it talks specifically about differentiating A. fuscosuccinea and A. angiospermarum (referred to, in this case, as A. americana ‘deciduous’) https://openjournals.wsu.edu/index.php/pnwfungi/article/view/1126 - macroscopically it seems like the biggest difference between the two is A. fuscosuccinea has more reddish-brown hues, though it does also have a white morph apparently - here’s an example https://www.inaturalist.org/observations/28084802
EDIT 6 I swear I’m stopping after this: There’s also A. cornea which ALSO is present in the US and has a densely hairy upper surface and variable morphology. So technically its more a look alike for A. nigricans which shares the hairy upper surface but from pictures it can honestly be hard to tell density of mushroom fuzz unless its a really sharp pictures.
Correct me if I’m wrong on any of this, I’m just combing through papers ATM