Zinna looks at the mold curiously from behind them. " I don't know where we are but this area looks nothing like where I was held. They held me in a large cavern, not in crafted cells like this. I never saw anything that looked similar to this when we escaped from the Cavern of Broken Dreams. "
Out of Character: in character action contingent upon Dungeon Master ruling such is within his knowledge. Otherwise just standing back and keeping an eye out.
In Character: Leo catches Corren's arm and shakes his head. "Good idea, but too dangerous, I've heard of fungi that release poison if disturbed, and others that grow if contacted by fire. If you want to try, toss it from a distance, or attach it to a pole. You don't want to be on top of it."
Corren has a couple of options here. He could attempt to jump over the mold by rolling a successful Dexterity (Acrobatics) check DC 10; the mold does appear to be flammable so he could attempt to burn it away, or of course he could turn back and avoid it altogether.