Sagittaria latifolia
Sagittaria
broadleaf arrowhead, duck potato, wapato
arrowhead
rhizomes absent; tubers present.
rhizomes present or not; stolons and corms present; tubers present or not.
emersed;
petioles ascending to erect; to 50 cm;
blades sagittate, 1–30 × 2–15 cm.
emersed, floating or submersed;
blades linear to ovate;
apex acute to rounded;
margins entire.
emersed, with 3–9 whorls, 4–25 cm;
peduncles 10– 55 cm; lowest inflorescence node with 3 pistillate flowers;
pedicels cylindrical, 0.5–3.5 cm.
racemes or panicles; lower nodes with pistillate or bisexual flowers, staminate flowers above;
bracts present.
to 4 cm in diameter;
sepals recurved to spreading;
petals without spot at base.
sepals 3–10 mm, reflexed to appressed;
petals white, with or without spot at base; entire;
stamens 7–30;
filaments glabrous;
pistils many, arranged spirally on receptacle.
heads 1–2 cm in diameter;
achenes oblanceolate, 2–3.5 mm;
wings absent;
beaks lateral or horizontal, 1–2 mm.
compressed; up to 4 mm long, winged or ridged.
=22.
Sagittaria latifolia
Sagittaria
Edges of streams and lakes, pools, ditches. Flowering Jul–Sep. 0–100 m. BR, Col, CR, WV. CA, ID, WA; throughout most of North America; South America. Native.
Cosmopolitan. Approximately 30 species; 3 species treated in Flora.
This genus is important as food for wildlife. Beavers, muskrats, and porcupines feed on the whole plants, including the starchy tubers of some species. Ducks and other waterfowl eat the seeds. Some species are deliberately planted in hunting areas. Sagittaria platyphylla has recently (2014) been reported in Portland. How widespread it is and how persistent it may be are currently unknown.
Tamra Prior
Tamra Prior
- Local floras:
BC, 
CA, 
OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
PNW Herbaria, Turner Photog. 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
