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
Philydrum lanuginosum, the sole species in the genus, is common along natural water courses and on floodplains. This species is occasionally found in rice fields but is not considered weedy. Philydrum is sometimes used in ornamental ponds.