Plant Identity

My partner Hollis and I discovered one of the unknown plants inside of our plot. The name of the first plant is Giant Lilyturf (Liriope gigantea) and looks exactly like one of the plants inside of our plot. It is very similar to grass but has a white streak in the middle of the leaves. Another plant we discovered that was unknown to us was the Abbotswood Potentilla (Potentilla fruticosa) which is a white flower plant located in our plot.