Poisonous mushroom whose gills glow in dark:

Explanation

The correct answer is the Jack-O' Lantern Mushroom. This species is known for its bioluminescent properties, where the gills can emit a faint greenish glow in the dark, a phenomenon known as foxfire. This glow is due to a chemical reaction involving luciferase enzymes. While 'Amanita' includes many poisonous species, they do not exhibit bioluminescence. 'Aspergillus' is a mold, not a mushroom, and does not glow. 'Agaricus' includes edible mushrooms such as the common button mushroom, which also do not glow in the dark.