Calliergon giganteum, the giant spearmoss, giant calliergon moss, or arctic moss, is an aquatic plant found on lake beds in tundra regions. It has no wood stems or flowers, and has small rootlets instead of roots.
You can copy this taxon into another guide. If you are one of the
editors of this guide it should copy everything, but if you're not, it
will only copy the licensed content.