E-Flora BC: Electronic Atlas of the Flora of British Columbia

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

Introduction to Vascular Plants

© Virginia Skilton  Email the photographer   (Photo ID #2696)

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Distribution of Sagittaria latifolia
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SUBTAXA PRESENT IN BC
Sagittaria latifolia var. latifolia

Species Information

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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.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

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

Habitat / 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.

Source: The Illustrated Flora of British Columbia

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

Minimum

Average

Maximum

Elevation (metres) 858 1005 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
Number 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)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References