''Littorella uniflora'' (vernacular name: (American) shoreweed) is a species of aquatic
flowering plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...
native to the Azores, Morocco, most of Europe excluding the dry southeast, Iceland, and the Faroes.
It prefers to live mostly submerged in nutrient-poor freshwater habitats. When submerged, it draws CO
2 mostly through its roots and uses a mix of
crassulacean acid metabolism (CAM) and
C3 carbon fixation for photosynthesis. If the water level drops and exposes the roots, it ceases using CAM.
References
Plantaginaceae
Freshwater plants
Plants described in 1864
{{Plantaginaceae-stub