mushroom identification

Picked up this mushroom at my LFS. They didn’t know what it was and mistaken it for a Sunkist bounce.

Hey all! My mushroom has green squiggly stuff coming out of the center. This is one of the two pieces that the mushroom split into about 2-3 weeks ago. What’s the green stuff in the center? What’s happening to the mushroom when this is happening? (See picture attached)

Hey guys, I bought this mushroom about a year ago from my local lfs as a red devil mushroom. Fast forward up until recently I thought thats what I had until someone mentioned that its not indeed a true red devil. I'm confused, at this point the mushroom has grown and has offspring lol. I love it...