Plant: Perennial, submersed rhizomatous herb; Rhizome stout, extensively creeping and branching; fertile stem (stolon) 2-3 mm in diameter Leaves: 2 per node of stolon, usually unequal, coarsely undulate dentate, to ca. 15 cm in diameter Inflorescence: umbels at leaf bearing nodes Flowers: yellow, on pedicels 6 cm or more long; corolla 2-2.5 cm long; floating or elevated above the water; buds submerged; corolla rotate, deeply lobed, the lobes fringed and bearing a glandular appendage near the base; ovary ellipsoid, the apex tapering to the short style; stigma 2 lobed, persistent Fruit: a tardily dehiscent, submerged, capsule; SEEDS smooth to papillate, the coat hard, flat, narrowly winged, ciliate on the margins Misc: ponds, lakes and slow flowing streams; 1100 m (3600 ft); Sep-Oct REFERENCES: Mason, Charles T., Jr. 2001. Iridaceae. J. Ariz. – Nev. Acad. Sci. Volume 33(1).