About Asplenium adiantum-nigrum L.
Asplenium adiantum-nigrum L. is a species of spleenwort fern. It produces thick, triangular leaf blades up to 10 centimetres (3.9 inches) long, which are divided into multiple further subdivided segments. Each blade grows from a reddish green petiole, and its rachis is shiny and slightly hairy. The undersides of every leaf segment hold one or more sori arranged in chains. This species has a broad native distribution across multiple world regions. In Africa, it is native to Northern and Southern Africa, specifically Algeria, Lesotho, Morocco, Tunisia, and multiple provinces of South Africa: Eastern Cape, Free State, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, Northern Cape, and Western Cape. In Asia, it is native to Western and Central Asia, including the Caucasus, Azerbaijan, Cyprus, the Sinai Peninsula of Egypt, Kyrgyzstan, Ciscaucasia and Dagestan in Russia, and Turkey. In Europe, it is native to Albania, Austria, Belgium, Bulgaria, the Czech Republic, Denmark, Finland, France (including Corsica), Germany, Greece, Hungary, Ireland, Italy (including Sardinia), the Netherlands, Norway, Poland, Portugal, Romania, Spain, Sweden, Switzerland, Ukraine (including Krym), the United Kingdom, and the Balkan Peninsula (former Yugoslavia). It is also native to the Macaronesian archipelagoes: the Azores, Madeira, and the Canary Islands. In North America, it is native to the Southwestern United States, specifically Arizona, Colorado, and Utah. In Oceania, it is native to Hawaii, where it grows on cinder cones and lava flows, and is found within Hawaii Volcanoes National Park.
