Calla palustris L.
wild calla (water arum)
Araceae (Arum family)

Introduction to Vascular Plants

Photograph

© Virginia Skilton     (Photo ID #25372)


Map

E-Flora BC Static Map

Distribution of Calla palustris
Click here to view the full interactive map and legend

Species Information

General:
Perennial aquatic herb from a long, creeping rhizome; stems solitary, 10-20 cm tall.
Leaves:
All basal, blades egg-shaped to broadly heart-shaped, entire, 5-12 cm long, 4-11 cm wide, long-stalked.
Flowers:
Inflorescence of numerous, densely packed, perfect (or sometimes the upper male) flowers in a cylindric to ellipsoid spike 1-3 cm long, the spike subtended by a bract (spathe) similar to the leaves in shape but white and slightly smaller; perianth absent; ovaries 1-celled.
Fruits:
Berry-like, egg-shaped, red, 5 mm long; seeds 6 to 8.

SourceThe Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Ecology

Ecological Framework for Calla palustris

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)
842 420 1237
Slope Gradient (%)
0 0 1

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

141 142 142
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
7 7 8
Modal Nutrient Regime
Class
D
# of field plots
 species was recorded in:
19
Modal BEC Zone Class
SBS

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

BWBS(2), ICH(3), IDF(1), SBPS(4), SBS(9)

Habitat and Range

Swamps, marshes and lakeshores in the montane zone; locally frequent in BC north of 52degreeN and E of the Coast Mountains, rare in SC BC; circumpolar, N to AK, YT and NT, E to NF and S to ME, PA, IN, IL, IA and ND; Eurasia.

SourceThe Illustrated Flora of British Columbia