Semment was a Healer at Great Reach Hold during the Sixth Pass.
Master Fortine compiled a list of alternatives (ash bark, box, ezob, and thymus) for the pulmonary infections that many feline-caused flu plague sufferers were experiencing. Semment felt that thymus was most effective for the pulmonary infections he had been treating, while Master Fortine held out for featherfern because "it is one of the few indigenous plants".