Sagittaria teres

Sagittaria teres
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Alismatales
Family:	Alismataceae
Genus:	Sagittaria
Species:	S. teres
Binomial name
Sagittaria teres S.Wats.
Synonyms [1]
Sagittaria graminea var. teres(S.Watson) Bogin

Sagittaria teres, the quill-leaved arrowhead ^[2] or slender arrowhead, ^[3] is an aquatic plant species in the genus Sagittaria . It is a perennial herb up to 80 centimetres (31 inches) tall. The leaves can grow both under and above the water. The flowers are white, up to 1.5 cm (1⁄2 in) in diameter, borne in one or more whorls on a stalk rising above the leaves. ^{[4] [5]}

It is native to the northeastern United States: Rhode Island (Providence and Washington Counties), Massachusetts, New Hampshire (Hillsborough County), New York (Suffolk County) and New Jersey. ^[6] It grows along the shores of lakes, marshes, and other wetlands, frequently those with acidic water such as Sphagnum bogs. ^{[4] [7] [8]}

Conservation

It is listed as endangered in Connecticut, ^[9] New Jersey, New York, and Rhode Island. It is listed as a special concern in Massachusetts. ^[10]

References

1. The Plant List, Sagittaria teres S.Watson
2. Go Botany, New England Wildflower society, Sagittaria teres S. Wats., quill-leaved arrowhead photos, description, info on ecology + conservation
3. NRCS. "Sagittaria teres". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 26 October 2015.
4. "Sagittaria teres in Flora of North America @ efloras.org". www.efloras.org. Retrieved 2017-01-30.
5. Gray, Asa. 1890. Manual of the Botany of the Northern United States (ed. 6) 555, Sagittaria teres
6. Biota of North America Program 2014 county distribution map
7. Biota of North America Program Sagittaria teres
8. "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew". apps.kew.org. Retrieved 2017-01-30.
9. "Connecticut's Endangered, Threatened and Special Concern Species 2015". State of Connecticut Department of Energy and Environmental Protection Bureau of Natural Resources. Retrieved 19 January 2018. (Note: This list is newer than the one used by plants.usda.gov and is more up-to-date.)
10. "Plants Profile for Sagittaria teres (slender arrowhead)". plants.usda.gov. Retrieved 22 January 2018.

External links

• Adrienne L. Edwards & Rebecca R. Sharitz. 2000. Population genetics of two rare perennials in isolated wetlands: Sagittaria isoetiformis and S. teres (Alismataceae). American Journal of Botany August 2000 vol. 87 no. 8 1147-1158 includes genetic and ecological information on both species, plus distribution map