Which sedges can grow as submerged aquatic plants?

While many sedges (family Cyperaceae) are adapted to moist or wet environments such as marshes, bogs, and lakeshores, they generally do not inhabit deep-water ecosystems. However, some species are capable of growing as submerged aquatic plants.1

According to botanical records, while a number of sedges function as emergent or floating mat aquatics, only a few species are known to be obligately submerged. The most notable example of a sedge that is obligately submerged is Websteria confervoides.2