Complex sentence: The family "Thermomonosporaceae" includes aerobic, Gram-positive, non-acid-fast, chemo-organotrophic actinomycetes that produce a branched substrate mycelium bearing aerial hyphae that undergo differentiation into single or short chains of arthrospores.
Split into simpler sentences: The family "Thermomonosporaceae" includes aerobic, Gram-positive, non-acid-fast, chemo-organotrophic actinomycetes. They produce a branched substrate mycelium bearing aerial hyphae that undergo differentiation into single or short chains of arthrospores.