We presume you are asking for a plant ID? These are a very slow-growing plant in a group called clubmosses (Lycopods). They are quite old in the lineage of plant evolution, and they are vulnerable to over-collecting and habitat loss because they reproduce from spores and it takes a young plant almost a decade to reach reproductive age. Several species in the clubmoss family grow in Maryland (some can be hard to tell apart), all of them native; you can explore the list on the linked page.