Cut Leaved Toothwort is another spring woodland ephemeral that just started to flower this week here in central Minnesota. The four parted white flowers are arranged in a cluster above the whorled deeply toothed leaves.
This woodland native has interestingly shaped rhizomes that are like rings joined together, also described as resembling a string of beads. Concatenata means 'linking together'. (Wildflowers of Wisconsin)
In Minnesota, this plant can be found in Big Woods remnants, such as Nerstrand State Park.
It is native North American woodlands from North Dakota southwards to Texas and east including Ontario, Quebec and the maritime provinces in Canada.