Triglochin L.
Carpels 3 or 6, cohering at the apices only. Fruit a follicle Triglochin
Rhizomes thick, tuberous roots present. Fertile carpels 3–6 not alternating with barren ones. Basal leaf without ligule
Tubers elongated, more than 13 mm long, distributed at a distance from the rhizome on long roots. Dorsal surface of mature carpels keeled or ridged
Leaves emergent or floating, spongy, upper surface glossy. Leaf sheath broad sometimes meeting across the blade, margins gradually inrolled
Fruit straight, small, globular 3–5 mm long, crowded 14–27 per cm of rhachis. Rhachis maroon. Robust perennial. Irrigation channels, swamps and steams. Fl. spring–autumn Triglochin multifructum
Fruit straight or twisted, 7–15 mm long, globular to ellipsoid, not crowded 3–11 per cm of rhachis. Robust perennial. Widespread. Swamps and slow flowing streams, sometimes in deeper water. Fl. spring–summer. Water Ribbons Triglochin procerum