This is a species that I had not seen before, though I had looked for it repeatedly, also in the area where there were found. It is not a common plant though it is found across Canada and the northern United State. It looks a bit like Listera banksiana, but lacks the black markings on the lip and has a deeper indentation at the apex of the lip. The leaves are also more round than the leaves of the other Listeras as the species name suggests. The plant can grow to 30 cm tall but the ones I found were under 15 cm. It has 5-15 flowers 1-1.5 cm long.