Monolena Primuliflora plants produce a small white bead-like substance on the bottom of their foliage that is food for ants. This substance is what helps protect the plant from any pests or other bugs from feeding on its leaves. If you notice ants on this plant, in particular, do not worry, it is normal. However, if you see other pests lurking around make sure you take care of them so they do not harm your plant.