“Fungus” (*1/2 out of four) was an incoherent sci/fi melodrama set in a post-apocalyptic Sweden in which scientists and various gang members (Lottie Johansson, Daniel Epstein, and others) struggle to stay alive in the midst of a pandemic incurred by toxic mushrooms. Too much mumbo and too much jumbo in this perplexing movie; by the time you sort out the muddle, film is too far gone for it to matter.