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]
| Sagittaria teres | |
|---|---|
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Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Alismatales |
| Family: | Alismataceae |
| Genus: | Sagittaria |
| Species: | S. teres
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| Binomial name | |
| Sagittaria teres | |
| Synonyms[1] | |
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Sagittaria graminea var. teres (S.Watson) Bogin | |
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
editIt 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
edit- ^ The Plant List, Sagittaria teres S.Watson
- ^ Go Botany, New England Wildflower society, Sagittaria teres S. Wats., quill-leaved arrowhead photos, description, info on ecology + conservation
- ^ USDA, NRCS (n.d.). "Sagittaria teres". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 26 October 2015.
- ^ a b "Sagittaria teres in Flora of North America @ efloras.org". www.efloras.org. Retrieved 2017-01-30.
- ^ Gray, Asa. 1890. Manual of the Botany of the Northern United States (ed. 6) 555, Sagittaria teres
- ^ Biota of North America Program 2014 county distribution map
- ^ Biota of North America Program Sagittaria teres
- ^ "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew". apps.kew.org. Retrieved 2017-01-30.
- ^ "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.)
- ^ "Plants Profile for Sagittaria teres (slender arrowhead)". plants.usda.gov. Retrieved 22 January 2018.
External links
edit- 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
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