Southern Adder's-tongue (Ophioglossum Pycnostichum) is a perennial fern in the Ophioglossaceae family with moderate care difficulty. It requires moderate watering and partial shade or full shade light in USDA hardiness zones 6-9. This plant is safe for cats and dogs.

Ophioglossum pycnostichum, commonly known as Southern Adder's-tongue, is a perennial fern native to bottomland forests and moist loamy soils, often found in successional forests and old fields.