Complex sentence: The mycelia colonizes the wood by decomposing the lignin and cellulose, producing a stringy white rot, and spreads from tree to tree by root grafts, killing trees in an ever widening circle (11).
Split into simpler sentences: The mycelia colonizes the wood by decomposing the lignin and cellulose, producing a stringy white rot. It spreads from tree to tree by root grafts, killing trees in an ever widening circle (11).