this post was submitted on 27 Dec 2023
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I went for a walk in the woods and found multiple fallen branches with this fairly long growth on them.

I assume that it is a fungus of some sort but does anyone have more info on what kind it is?

I found so many that I eventually stopped taking pictures of it. But I haven't seen this before so I was surprised, as I spend quite a lot of time in the woods.

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[–] [email protected] 122 points 10 months ago (1 children)

https://en.wikipedia.org/wiki/Hair_ice

Hair ice, also known as ice wool or frost beard, is a type of ice that forms on dead wood and takes the shape of fine, silky hair

[–] [email protected] 37 points 10 months ago (3 children)

That is really surprising because it didn't feel that cold. It's actually +1C at the moment so did not even consider ice!

[–] [email protected] 33 points 10 months ago (1 children)

It says in the article it can persist for days.

[–] [email protected] 30 points 10 months ago* (last edited 10 months ago) (1 children)

Yes! I am not doubting it at all. I am just surprised at it being ice (even after reading the Wikipedia link)

[–] [email protected] 33 points 10 months ago (1 children)

Though apparently only forms because of a fungus!

[–] [email protected] 55 points 10 months ago* (last edited 10 months ago) (1 children)

If you can't explain it or it's weird as hell, it's always a fungus.

[–] [email protected] 8 points 10 months ago (1 children)

!The fungus shapes the ice into fine hairs through an uncertain mechanism and likely stabilizes it by providing a recrystallization inhibitor similar to antifreeze proteins!<

I always find these interesting that we still haven't figure out fungi fully.

[–] [email protected] 5 points 10 months ago

Wer haven't figured out anything fully

[–] [email protected] 5 points 10 months ago

You should submit some of your photos to Wikipedia. They're very clear compared to some of the handful in the article

[–] [email protected] 1 points 10 months ago

Probably because the mass is very low.

[–] [email protected] 14 points 10 months ago (1 children)

You didn't touch, did you?! Ooh god, I bet op did.

I'm so sorry.

[–] [email protected] 7 points 10 months ago (1 children)

Nah he just ate it. Delicious!

[–] [email protected] 4 points 10 months ago
[–] [email protected] 10 points 10 months ago

Exidiopsis effusa is the fungus involved, but the feathery white hairs are ice. The fungus facilitates the production. Here's the article.

[–] ani 6 points 10 months ago (1 children)

I spend quite a lot of time in the woods

Let me ask the real questions OP: what do you do in the woods?

[–] [email protected] 16 points 10 months ago

It will be in the news soon enough...

/s

Just kidding. I just walk our dogs there (quite often)

[–] [email protected] 5 points 10 months ago (1 children)
[–] [email protected] 4 points 10 months ago

Thanks! But I am even more happy to learn about this type of fungus-generated ice! Nature is wild!

[–] [email protected] 4 points 10 months ago

There’s a fungus among us.

[–] [email protected] 2 points 10 months ago (1 children)

I just saw this for the first time today, 11 days after seeing this post. A person I was with suggested it grew mostly on beech wood.

[–] [email protected] 0 points 10 months ago

That's amazing!

[–] [email protected] 1 points 10 months ago
[–] [email protected] 0 points 10 months ago

Harry who? Harry Fungus!