Leidyula is a genus of slugs in the family Veronicellidae, the leatherleaf slugs. In the shrub layer were bog rosemary, leatherleaf, blueberry, and huckleberry. Tillandsia variabilis, the leatherleaf airplant, is a species of bromeliad in the genus "Tillandsia". Other characteristic species include leatherleaf polypody fern and evergreen huckleberry. Shrubby areas, called heaths include leatherleaf, blueberries, bog rosemary, and cranberries. Undulambia polystichalis, the leatherleaf fern borer moth, is a moth in the family Crambidae. Pitcher plants, lady's slipper, rhododendron, huckleberry, mountain laurel, and leatherleaf also occur in these wetlands. Viburnum rhytidophyllum, the leatherleaf viburnum, is a species of "Viburnum", native to Asia. Leatherleaf naturally forms large clonal colonies, but is very shade-intolerant.