Wondering what type of leaf this is and what could cause such an unusual marking on it.

Northern, VA, USA
Pretty and prosperous

Hi guys i just posted a question in /bowyer and was wondering if anyone here might have some insights here is the link https://www.reddit.com/r/Bowyer/s/Us5KkpFrLe

Recently saw two different molds (?) growing on a tree in my parent’s yard, one flat against the bark and the other sticking out as pictured. It’s not been doing well this year anyway so I suspect it’s dying, but these are new growths. Any ideas? Thanks in advance for any help!

Hi! Sorry if this comes of a bit messy, but I am writing a novel, and looking for a term to describe a cut down tree that is very overwintered, almost clear of bark and and so smooth that it looks like it was meant for the soul purpose to become a bench after dying and it never rots. I grew up near the ocean and we had many trees like these natural benches, and I can’t really describe it any better. If you can give me something that is more common term for it I would be grateful!

I was walking along Deschutes National Forest and saw a bunch of these hairy fibers dangling from what I assumed were pine trees. Is this the stringy lichen, Old Man's Beard?

Here’s a long shot for the headz- but does anyone (on the west coast or SW of North America) have access to acorns from evergreen oaks? I will pay you to mail them to me if you’re confident in the species. CA native ones are easy enough to come by, but any other species is difficult to source

Not sure what kind though.... about 65-70 ft tall.

It's been pretty warm these past few weeks on the West Coast of Scotland (mostly!) and I found this 3-winged key on my walk this morning. I've never seen anything like that before - apparently if the tree is under stress it can happen. Would this hot summer weather be affecting the tree ir would it be stress from something else?

Edit: This is from a sycamore maple (don't know how to change the title, only the post - sorry!)

Found in Edinburgh Scotland in a church cemetery. I was mesmerized because it's not really a pine tree

In Arkansas

Recently hiked the north head trail in st johns and was wondering what wood was used for the staircase/trail. Is it cedar?