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

Brasenia schreberi J.F. Gmel.
water shield (water target; watershield)
Cabombaceae (Water-shield family)

Introduction to Vascular Plants

© David Badke  Email the photographer   (Photo ID #75049)

E-Flora BC Static Map
Distribution of Brasenia schreberi
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Species Information

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Perennial aquatic herb from a slender rhizome; stems several, branched above, reddish-brown, covered with a gelatinous sheath, 5-40 cm long.
Leaves floating, long-stalked, elliptic or oval, centrally attached to the stems, 5-12 cm long, 3-8 cm wide, gelatinous below.
Solitary on 5-20 cm stalks; sepals and petals 3 (4) each, similar, purplish, linear-oblong, 10-15 mm long; stamens 12-18, purplish, slightly shorter than or equal to the petals.
Oblong, leathery, 6-8 mm long, soon deciduous.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Ponds and slow-moving streams in the lowland, steppe and montane zones; common in SW BC, less frequent in SC BC; N to SE AK, E to NB and NS and S to FL, TX, and CA; Cuba, S America.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Brasenia schreberi

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




Elevation (metres) 15 70 145
Slope Gradient (%) 0 0 0
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
7 7 8
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: CDF(7), CWH(11)


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 cool temperate & cool mesothermal.

Synonyms and Alternate Names

Brasenia peltata Pursh

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References