Thank you for your plant identification question.  From your photos is looks like your plant might be broadleaf helleborine (Epipactis helleborine).  Here is some information on it from the Michigan State Universitiy Extension:
https://www.canr.msu.edu/news/homeowners_battling_a_weedy_orchid_invading_lawns_and_flowerbeds

In terms of control, this is from the publication:

In an ornamental bed, controlling broadleaf helleborine with an herbicide is challenging without injuring other desirable plants. For a few helleborine plants, we would recommend cutting the plants, leaving 3-4 inches of stem, and immediately treating the cut surface with the broad spectrum herbicide glyphosate (e.g., Bioadvanced Weed & Grass Killer Concentrate). To minimize movement of this herbicide consider painting it on the cut surface with a disposable foam brush or cotton swab while wearing gloves and any other personal protective equipment listed on the label.

When using products containing glyphosate there are a few important points to consider. First, as with any pesticide, remember to read and follow all labeled instructions. Second, glyphosate is a broad-spectrum herbicide, meaning it will injure or kill other plants contacted during application, so care is needed to avoid green plant material, exposed roots, and injured bark of desired plants.

Third, glyphosate is relatively safe in the environment when used as labeled. It adsorbs strongly to soil in most cases (i.e., clay and organic matter), allowing even sensitive crops to be planted shortly after application; meaning no carry over issues are expected. Fourth, glyphosate alone can take up to 14 days to show full activity under ideal growing conditions. Retreatment of the area may be needed depending on the degree of infestation. Glyphosate is most effective for perennial control in the fall but can be applied anytime the plants are actively growing (temperatures consistently above 50 degrees Fahrenheit).

Finally, be sure that the product you choose has only the active ingredient glyphosate or glyphosate plus pelargonic acid. Products with additional active ingredients may have other unwanted effects and may delay the planting of other plants in the coming seasons.

Glyphosate is a non-selective contact herbicide, so care must be taken when using.  Some people make a funnel-type aid to spray into by cutting off the bottom of a gallon milk container or similar, which prevents the glyphosate spray from drifting to other plants.  

Glyphosate is pulled into the plant when it photosynthesizes and then travels to all parts of the plant, including underground stems and roots.  With tenacious weeds it may take several treatments, but do know that the herbicide may take up to a couple of weeks to work.

Good luck with your weed control.