LeavesLeaves basal, simple, heart-shaped to egg-shaped, 5 to 10 cm long, 4-10 cm wide, margin entire, net venation; no apparent trichomes on the leaf surface; petioles 7 to 10 cm long, thick, spongy, adaxially concaveFlowersInflorescence a single terminal spadix, 1.5 to 2.5 cm long, 40 to 60 sessile flowers, subtending spathe; spathe egg-shaped, white upper surface, 2.5 to 7 cm long, concave to flat, behind spadix; flowers radially symmetric, lacks sepals and petals, most bisexual except for the top most flowers of the spadix which are exclusively staminate; stamens 6 to 12, anthers short and broad, filament narrow; pistils 1, ovary superior, stigma roundFruits and SeedsFruits are berry-like, red, egg-shaped, 5 mm long, 2 to 14 seeds; seeds brown at maturation with a number of dark spots at one end, cylindrical, 3.7 mm long, 1.6 mm wide
Scientific NameCalla palustris L.
Common Name
wild calla lily, water arum, wild calla
General Description
Perennial aquatic herb; stems solitary, 10 to 20 cm tall, green; long creeping rhizomes with adventious roots circling the nodes
Leaves
Leaves basal, simple, heart-shaped to egg-shaped, 5 to 10 cm long, 4-10 cm wide, margin entire, net venation; no apparent trichomes on the leaf surface; petioles 7 to 10 cm long, thick, spongy, adaxially concave
Flowers
Inflorescence a single terminal spadix, 1.5 to 2.5 cm long, 40 to 60 sessile flowers, subtending spathe; spathe egg-shaped, white upper surface, 2.5 to 7 cm long, concave to flat, behind spadix; flowers radially…
Inflorescence a single terminal spadix, 1.5 to 2.5 cm long, 40 to 60 sessile flowers, subtending spathe; spathe egg-shaped, white upper surface, 2.5 to 7 cm long, concave to flat, behind spadix; flowers radially symmetric, lacks sepals and petals, most bisexual except for the top most flowers of the spadix which are exclusively staminate; stamens 6 to 12, anthers short and broad, filament narrow; pistils 1, ovary superior, stigma round
Fruits and Seeds
Fruits are berry-like, red, egg-shaped, 5 mm long, 2 to 14 seeds; seeds brown at maturation with a number of dark spots at one end, cylindrical, 3.7 mm long, 1.6 mm wide
Phenology
The infloresence appears in May, flowers present from June to July
Notes
Unique Adaptations:
Each shoot has only one inflorescence per year, but each spadix may contain more than one spathe (up to four) (Dudley, 1937).
Pollination is by insects (Dudley, 1937), but it has also been noted…
Unique Adaptations:
Each shoot has only one inflorescence per year, but each spadix may contain more than one spathe (up to four) (Dudley, 1937).
Pollination is by insects (Dudley, 1937), but it has also been noted by snails, where they laboriously climb the stalk that they are attracted to by an unpleasant smell (McGregor, 1976).
Ethno-botanical uses:
The roots have been used in bread-making, however, caution must be exercised in doing so. The plant contains high concentrations of calcium oxalate, which may cause buring of the mouth and throat (Plants of Alberta).
The genus name is thought to come from the Greek word kallos, meaning ‘beautiful’ (Johnson et al. 1995).
Range/Distribution
Alberta: Northern Alberta
CAN (BC, LB, MB, NB, NF, NS, NT, NU, ON, PE, QC, SK, YT); USA (AK, CT, IA, IL, IN, MA, MD, ME, MI, MN, ND, NH, NJ, NY, OH, PA, RI, VT, WI); Eurasia
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Citation
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Page Citation for Calla palustris L.
Page Citation
"Species Details - Calla palustris L., University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/1-3010/12-1508. Accessed 02 Dec. 2024.
Specimen Information
There are 74 specimens of this Species.
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45 results plotted on map in 42 markers. Note: Only records with latitude and longitude coordinates are plotted on map.