Asplenium adiantum-nigrum

Appearance

This spleenwort has thick, triangular leaf blades up to 10 centimeters long which are divided into several subdivided segments. It is borne on a reddish green petiole and the rachis is shiny and slightly hairy. The undersides of each leaf segment have one or more sori arranged in chains.

Distribution

:''Asplenium adiantum-nigrum'' is native to:
;Africa
⤷ Northern and Southern Africa in: - Algeria; Lesotho; Morocco; the provinces of South Africa including Eastern Cape, Free State, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, Northern Cape, and Western Cape; and Tunisia.
;Asia
⤷ Western Asia and Central Asia in - the Caucasus; Azerbaijan; Cyprus; the Sinai Peninsula of Egypt; Kyrgyzstan; Ciscaucasia and Dagestan in Russia; and Turkey.
;Europe
⤷ Albania; Austria; Belgium; Bulgaria; the Czech Republic; Denmark; Finland; France ; Germany; Greece; Hungary; Ireland; Italy ; the Netherlands; Norway; Poland; Portugal, Romania; Spain; Sweden; Switzerland; Ukraine ; the United Kingdom; and in the Balkan Peninsula
;Macaronesia
⤷ Macaronesian archipelagoes of: the Azores, Madeira, the Canary Islands.
;North America
⤷ Southwestern United States - Arizona, Colorado, and Utah
;Oceania
⤷ Hawaii
In Hawaii, this native fern grows on cinder cones and lava flows, and it is present in Hawaii Volcanoes National Park.