Rubus invisus

Like other dewberries, it is a species of flowering plant in the rose family, related to the blackberry.

[2] Rubus invisus is a trailing shrub with stems running along the surface of the ground.

[3] Canes are short, and form dense mats up to 1.5 feet (46 cm) thick.

[3] Rubus invisus has been found in Indiana, Kentucky, Maryland, Massachusetts, Missouri, New Hampshire, New York, Ohio, Pennsylvania, Tennessee, Vermont, Virginia, West Virginia.

[2][4] It typically inhabits areas of rocky soil and partial to full shade.