Sagittaria subulata, the awl-leaf arrowhead, narrow-leaved arrowhead or dwarf sagittaria, is an aquatic plant species native to the Americas.
Description It is a perennial herb up to tall. The leaves are submersed or floating, narrowly linear to ovate, not lobed. The inflorescence floats on the surface of the water.
Distribution and habitat It is native to Colombia, Venezuela, and every US state along the coast from Massachusetts to Louisiana.Biota of North America Program map, Sagittaria subulata It has also been reported as naturalized in Great Britain on just three occasions; only one of these is recent and it appears to have become extinct by 2010. It is also recorded as a non-native on the Azores, and on the Island of Java in Indonesia.Kew World Checklist of Selected Plant Families, Sagittaria subulata It grows primarily in shallow brackish water along the seacoast, in marshes, estuaries, etc.
Conservation It is listed as special concern in Connecticut,"Connecticut's Endangered, Threatened and Special Concern Species 2015". State of Connecticut Department of Energy and Environmental Protection Bureau of Natural Resources. Retrieved 12 January 2018. (Note: This list is newer than the one used by plants.usda.gov and is more up-to-date.) as endangered in Massachusetts, as rare in Pennsylvania, and as historical in Rhode Island.
References
External links photo of herbarium specimen at Missouri Botanical Garden, collected in Delaware