This is called marcescence. Commonly seen on juvenile oaks, hornbeams, and beeches, the why behind marcescence remains a mystery.  Music is by Dr. Ron Deckert. Find him on SoundCloud. If you have question such as "WTF is that thing doing that", drop me a email [email protected] or send me a message on Facebook, Instagram, Twitter, and Tik Tok @wtf_biology. I'll try to answer your question in a minisode or maybe even a full episode. Find Cool Ass Nature Shit on my YouTube channel. Find me at https://www.patreon.com/lazybiologyproductions. There you'll see all the science communication projects I'm working on and decide which one(s) you would like to support. Check out my website at www.lazybiology.com.