Sagittaria filiformis

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Threadleaf arrowhead
Scientific classification edit
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Order: Alismatales
Family: Alismataceae
Genus: Sagittaria
S. filiformis
Binomial name
Sagittaria filiformis
  • Sagittaria natans Michx.
  • Sagittaria natans var. gracillima S.Watson
  • Sagittaria stagnorum Small
  • Sagittaria storiflexum B.Bagmor.
  • Sagittaria subulata var. gracillima (S.Watson) J.G.Sm.
  • Sagittaria subulata var. natans J.G.Sm.

Sagittaria filiformis, the threadleaf arrowhead,[2] is an aquatic plant species native to the eastern United States, from Maine south to Florida and Alabama. it occurs in flowing streams in the northern part of its range, but more stagnant waters such as marshes and swamps in the South.[3][4]

Sagittaria filiformis is a perennial herb up to 170 cm tall. Some leaves are thread-like, entirely underwater, but others are narrowly ovate or lanceolate and floating on the surface.[3][5]


  1. ^ The Plant List, Sagittaria filiformis
  2. ^ "Sagittaria filiformis". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 26 October 2015.
  3. ^ a b "Sagittaria filiformis in Flora of North America @". Retrieved 2017-01-30.
  4. ^ "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew". Retrieved 2017-01-30.
  5. ^ Smith, Jared Gage. 1894. North American Species of Sagittaria and Lophotocarpus 20, pl. 15, figs 5-8, Sagittaria filiformis

External links[edit]