Korean Rock Fern
- Botanical Name: Polystichum tsus-simense
Common Name(s): Korean Rock Fern
Description: The geographic origin of P. tsus-simense is the East Asian countries, such as China, Korea, Japan, Thailand, and the Indochina region. The specific epithet tsus-simense refers to Tsushima Island. Although it is not native to the United States, the Korean rock fern has been introduced to the country through Florida and Louisiana.