- Scheuchzeriaceae, family Scheuchzeriaceae, Juncaginaceae, family Juncaginaceae, arrow-grass family - a family of monocotyledonous bog herbs of order Naiadales
--1 is a kind of monocot family, liliopsid family
--1 is a member of Naiadales, order Naiadales, Alismales, order Alismales
--1 has members: Triglochin, genus Triglochin