There's a few ferns and mushrooms in there, but they're too small to show up. The base game is pretty barren:
One of the dilemmas I'm facing is whether or not to deviate from a purely authentic recreation (e.g. adding appropriate props from divinity when they fit the atmosphere). Right now I'm leaning in that direction, so I probably will add some grass. I've used the instance painter a little bit.
I'll show some more of the dungeon when I get home.