Plant: perennial herb; Stems 5-25 dm tall, erect, stout, branching Leaves: 3-10 dm long, 7-17 mm wide, equalling to shorter than the inflorescence, flat, somewhat keeled below Inflorescence: branched, 1.5-5 dm long, the upper branches with 5-12 staminate heads, these sessile or peduncled, 2-3 cm in diam. when mature; pistillate heads 2-6 on the main stem or on branches, sessile or usually peduncled, 2-2.5 cm diam. in fruit Flowers: STAMINATE FLOWERS: perianth scales 3-7 mm long, clawed, expanded and spatulate with irregularly lobed hyaline margined apex; anthers 1-1.5 mm long, elliptic-clavate. PISTILLATE FLOWERS: perianth scales almost as long as the fruits, long-clawed, expanded and spatulate, with irregularly lobed hyaline-margined apex; style branches 2, rarely simple, filiform, 1.8-2 mm long Fruit: FRUITS mostly 2-seeded, 6-10 mm long, 4-8 mm wide at apex, sessile, hard and thick at maturity, cuneate-obpyramidal, irregularly and obtusely 3-5-angled, the tip truncate to depressed or very shallowly rounded, the stout beak 2-3 mm long Misc: Wet meadows and along streams; 2100-2150 m (7000-7100 ft); May-Sep REFERENCES: Ricketson, Jon. 2001. Sparganiaceae. J. Ariz. – Nev. Acad. Sci. Volume 33(1).