Fun facts about mushrooms – starting from the cell level. What makes them so amazing, the author notes, is
their cell walls are made of a molecule called chitin instead of cellulose that you’d find in plants. Chitin is bendable yet tough. Its ability to defend itself from outside pathogens makes it valuable in medicine and as food. Perhaps best of all, it grows quickly. Some strains that start about the size of a fingernail can grow into 200,000 pounds of biomass in just a few months.