Triglochin L.
Carpels 3 or 6, cohering at the apices only. Fruit a follicle Triglochin
Rhizomes slender, tuberous roots absent. Basal leaf forming an obtuse ligule. Fertile carpels 3, alternating with 3 persistent barren ones. Leaves 1–3 mm wide, up to 30 cm long. Scape slender, shorter or longer than the leaves, with few to many small flowers. Fertile carpels streaked on the rounded back. Perennial with a creeping rhizome. Coast. Margins of salt marshes. Fl. spring–summer. Arrow Grass Triglochin striatum