threadleaf arrowhead
Sagittaria filiformis J.G.Sm.
Sagittaria filiformis, known as threadleaf arrowhead, is a perennial aquatic plant in the family Alismataceae. It can grow up to 170 cm tall and is characterized by thread-like, underwater leaves as well as narrowly ovate or lanceolate floating leaves.
Description
Sagittaria filiformis is native to the Nearctic region, with documented occurrences in the United States from Alabama to Maine and in Trinidad-Tobago. This aquatic plant was first described in 1894 by J.G. Sm. It exhibits a unique leaf morphology, with some leaves being very narrow and submerged, while others are broader and float on the water's surface. The species is part of the genus Sagittaria, which includes a variety of arrowhead species.
Other common names
threadleaf arrowhead
Distribution
Nearctic · Alabama · Connecticut · Florida · Georgia · Maine · Massachusetts · New York · North Carolina · Pennsylvania · Rhode I. · South Carolina · Trinidad-Tobago · Virginia
Synonyms
Sagittaria natansSagittaria stagnorumSagittaria subulata var. gracillimaSagittaria natans var. gracillimaSagittaria subulata var. natans