waterpurslane, blood stargrass, waterhedge
eastern North America
Species commonly cultivated
Didiplis diandra (Nutt. ex DC.) Wood (North America)
Annual or short-lived perennial. Stems ascending or creeping, slender, with adventive roots produced from lower nodes. Leaves opposite, decussate, sessile, linear (submersed) to elliptic (emersed), entire, mid-vein prominent. Flowers small, axillary, solitary, sessile, actinomorphic; sepals fused, lobes 4; petals absent. Dispersal by seed and stem fragments.
variety of habitats from lakes and ponds to rivers and marshes