Philydrum Banks & Sol. ex Gaertn.
Southeast Asia to Australia
Species commonly cultivated
Philydrum lanuginosum Banks & Sol. ex Gaertn. (Australia to Asia)
Perennial. Rhizome stout. Leaves in compact basal cluster (appearing as a rosette), alternate, distichous, fleshy, linear, sessile, sheathed at base, venation with numerous parallel veins; margin entire; upper leaves becoming bracts. Flowers bisexual, zygomorphic, sessile, solitary in axils of spathe-like bracts; perianth segments 4, in 2 dissimilar whorls of 2, yellow. Dispersal by seed.
shallow water in swamps, streams, and rivers