Vascular Plants - Alismataceae - Sagittaria:
Sagittaria latifolia
Page Authors: Don Knoke, David Giblin
broadleaf arrowhead, common arrowhead, wapato, duck potato 
Blooms: July-September
Habit: herb
Duration: perennial
Origin: Native
Conservation Status: Abundant; of no concern.

Distribution: Occurring on both sides of the Cascades in Washington; Vancouver Island, British Columbia south to central California; primary distribution in central and eastern North America.
Habitat: Ditches, ponds, lakes, swampy areas.
Species Description:

General: Aquatic, scapose, tuber-bearing perennials from strong rhizomes, the scapes up to 5 dm. long.
Leaves: Leaves mostly emersed, but often submerged and the blades floating; blades sagittate or hastate, up to 2.5 dm. long and nearly as broad; submerged leaves sometimes bladeless and greatly elongate, 4-10 mm. broad.
Flowers: Flowers in 2-8 whorles of 3 in bracteate racemes, the bracts 5-10 mm. long, blunt, hooded; pedicles 1-5 cm. long, ascending, in both the pistillate flowers (lower whorles) and staminate flowers.(upper whorles), or the plants sometimes monoecious; sepals 3, 5-10 mm. long, persistent; petals 3, white, twice as long as the sepals; stamens more than 20; pistils many on a globose receptacle.
Fruits: Achenes 2.5-4 mm. long, winged, with a stylar beak strongly up-turned, 0.5-1.5 mm. long.
Accepted Name:
Sagittaria latifolia Willd.
Synonyms:
(none)

Treated in Flora of the PNW as:
Sagittaria latifolia
Additional Resources:

PNW Herbaria Specimens: View list of Sagittaria latifolia specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Sagittaria latifolia specimens in the WTU Herbarium database.

Washington Flora Checklist: Sagittaria latifolia treatment.

E-Flora BC: Sagittaria latifolia atlas page.

CalPhotos: Sagittaria latifolia images.

USDA Plants Database: Sagittaria latifolia.
Additional photographs of Sagittaria latifolia:
(click on a thumbnail to view larger photo)

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Fred Weinmann

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009
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Washington Native Plant Society
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