| Sagittaria graminea|
Sagittaria graminea, the grassy arrowhead or grass-leaved arrowhead, is an aquatic plant species native to eastern North America. It is known from every Canadian province from Ontario to Newfoundland, and every US state from the Great Plains to the Atlantic, plus Colorado, New Mexico and Cuba. It is considered naturalized in Washington State and in Vietnam.
A long list of varietal and subspecific names have been proposed over the years. Most have either been elevated to the species level or relegated to synonymy. At the present time (April 2014) only two are recognized:
- Sagittaria graminea subsp. graminea
- Sagittaria graminea subsp. weatherbiana (Fernald) R.R.Haynes & Hellq.
- The Plant List, Sagittaria graminea
- "Sagittaria graminea". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 26 October 2015.
- "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-02-25. Retrieved 2014-10-17.
- Kew World Checklist of Selected Plant Families, Sagittaria graminea
- Flora of North America v 22 Sagittaria graminea
- André Michaux. 1803. Flora Boreali-Americana 2: 190, Sagittaria graminea.
- Haynes, Robert Ralph & Hellquist, Carl Barre. 2002. Novon 6(4): 371. Sagittaria graminea subsp. weatherbiana
- Missouri Botanical Garden, Plant Finder, Gardening Help, Sagittaria graminea
- Plants for a Future
- Lady Bird Johnson Wildflower Center, University of Texas
- Center for Aquatic and Invasive Plants, University of Florida IFAS