Sagittaria latifolia Willd.
Broad-leaved Arrowhead (Bird's-eye Pearlwort; broadleaf arrowhead; wapato)
Alismataceae (Water-plantain family)

Introduction to Vascular Plants

Photograph

© Virginia Skilton     (Photo ID #2696)


Map

E-Flora BC Static Map

Distribution of Sagittaria latifolia
Click here to view the full interactive map and legend

SUBTAXA PRESENT IN BC

Sagittaria latifolia var. latifolia

Species Information

General:
Perennial aquatic or semi-aquatic herb from a tuber-producing rhizome; stems 20-50 (90) cm tall.
Leaves:
All basal, blades of the emergent leaves arrowhead-shaped, 5-25 cm long, long-stalked and sheathed at the base, blades of the submerged leaves lanceolate, or linear and essentially bladeless, up to 80 cm long.
Flowers:
Inflorescence an open, bracteate panicle of stalked flowers, the bracts egg-shaped, rounded or hooded at the tips, 5-10 (15) mm long; mature male and female flower stalks of equal length; petals white, 1-2 cm long; sepals 5-8 mm long.
Fruits:
Achenes, numerous in a globular cluster, winged, 2-3.5 mm long, sharp-beaked, the beaks extending at right angles to the body, 0.5-1.5 mm long.

SourceThe Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Yellow
Blooming Period:
Late Spring
Source:  The USDA

Ecology

Ecological Framework for Sagittaria latifolia

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Avg

Min

Max

Elevation (metres)
1005 858 1152
Slope Gradient (%)
0 0 0

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

0
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
7 7 8
Modal Nutrient Regime
Class
B
# of field plots
 species was recorded in:
2
Modal BEC Zone Class
IDF

All BEC Zones (# of stations/zone) species was recorded in

BWBS(1), IDF(1)

Habitat and Range

Wet ditches, ponds, lakeshores and marshes in the lowland, steppe and montane zones; infrequent in BC south of 56degreeN, absent from Queen Charlotte Islands, N Vancouver Island and adjacent coast; E to PQ, NB and NS and S to ME, PA, NC, FL, MS, TX, NM, AZ and CA; N South America, HI.

SourceThe Illustrated Flora of British Columbia