The fungus Flaviporus brownii (Humb. ex Steud.) Donk, widespread in the tropics, produces fruitbodies in temperate zones only in mines, greenhouses, and glass factories. Fruiting depends on extraordinary ecological conditions, especially constant temperature and high humidity. Another interesting finding was Psilopezia babingtonii (Berk.) Berk., collected in total darkness in a coal mine, where it lacked pigmentation. This pale form is considered an ecotype of the typical brown form.
Kuthan J. (1977): Zwei interessante Pilzfunde im Untertagebau einer Kohlengrube. – Česká Mykologie 31(3): 164–169.
