Noun | 1. | family Scheuchzeriaceae - a family of monocotyledonous bog herbs of order Naiadales liliopsid family, monocot family - family of flowering plants having a single cotyledon (embryonic leaf) in the seed Alismales, Naiadales, order Alismales, order Naiadales - an order of aquatic monocotyledonous herbaceous plants genus Triglochin, Triglochin - perennial or annual bog or marsh plants; includes arrow grass |