Calla palustris (Wild Calla)
|Also known as:||Water Arum|
|Habitat:||part shade, sun; bogs, swamps, wet ditches, shallow water|
|Bloom season:||May - June|
|Plant height:||6 to 16 inches|
|Wetland Indicator Status:||GP: OBL MW: OBL NCNE: OBL|
|MN county distribution (click map to enlarge):|
|National distribution (click map to enlarge):|
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A single cylindric spike (spadix), sheathed by a smooth, waxy, oval petal-like spathe, at the end of a stout stem arising 3 to 12 inches above the waterline. The spathe is broadly oval to elliptic, creamy white, 1 to 3 inches long and about 1 inch wide. The spadix is up to 1 inch long and studded with petal-less flowers, creamy white stamens surrounding a conical green pistil.
Leaves and stems:
Notes:Wild Calla is common in more acidic, shallow water and bogs in the NE third of Minnesota. We spotted a colony growing in a wet ditch along a highway in Aitkin county, among other places.
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Photos courtesy Peter M. Dziuk, taken at several locations in central Aitkin county.
Have you seen this plant in Minnesota, or have any other comments about it?