Here are some macro shots I'll be trying to post for the current #monomad challenge.
Polyporus meridionalis looks exactly like a concrete nail stuck to the wood. This is a hard-textured mushroom with a porous underside of the cap that belongs to the family Polyporaceae.
This one is Calyptella capula ; we commonly refer to it as the jasmine mushroom because it is so similar. The fungus is white and translucent, and it frequently grows on small, rotting twigs.
All of the images here are my own work, taken with a Xiaomi POCO NFC smartphone and an assembled external macro lens.